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Clarkston internal medicine, PC

Bashar Okka, MD Chirine Elmokdad, MD Nathan Chase, MD Megan Clemence, NP

Emily Aranyos, PA Andrea Krane, NP

7188 N. Main Street, Clarkston MI 48346

Quality care always!

Committed to you

Dr. Bashar Okka and Dr. Nathan Chase have been serving the Clarkston community for over 25 years, continuing Clarkston Internal Medicine values following the retirement of Rosa Mirijanian, MD. With the additions of Megan Clemence, N.P. in 2019 and Dr. Chirine Elmokdad in 2021.

Emily Aranyos, P.A. and Andrea Krane, N.P. joining in 2023 for

Same-Day Appointments. Clarkston Internal Medicine looks forward to continuing their commitment to Clarkston and the surrounding communities.

Our providers are board-certified in their respective fields. Their high ethical standard, commitment to quality care, and love of medicine will exceed your expectations. This is the same standard they hold with all members of your care team, from the front desk to clinical staff, billing, and Chronic Care Management, we are sure you will notice the difference we provide.

Bashar Okka, MD

Internal Medicine and Hospitalist

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With over 25 years of experience, Dr. Okka is an expert in Internal Medicine care. Originally from Syria, he has made his home here in Oakland County, with his wife and 3 children. He has a passion for providing quality care with an interest in cardiovascular disease and caring for patients as a Hospitalist. He is co-owner of Mercy Hospitalists and owner of Hospitalist Services of Michigan, as well as Independence Urgent Care and Clarkston Internal Medicine.

Chirine Elmokdad, MD

Internal Medicine and Obesity Medicine

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As our newest physician to join

Clarkston Internal Medicine,

Dr. Elmokdad brings her expertise to the group as an Internist, Hospitalist, and Bariatrician. She completed her undergraduate education at Wayne State University and medical school at Ross School of Medicine, furthering her education in Obesity Medicine with Harvard Medical School. She completed her residency at Trinity Health Hospital in 2021. She lives here with her husband and 2 children.

Nathan Chase, MD

Internal Medicine and

Hospice and Palliative Care

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Dr. Chase has been a physician with ​Clarkston Internal Medicine since the ​practice started in 2000. He continues to ​see his established patients on a limited ​schedule as he is moving his focus to ​Hospice and Palliative Care as the Medical ​Director for Trinity Hospice. Dr. Chase ​lives in the Clarkston community with his ​wife and enjoys spending as much time as ​he can with his adult children and many ​grandchildren.

Megan Clemence, NP

Internal Medicine

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Since 2019, Megan Clemence, NP has been providing excellent care to her patients, working along-side Dr. Okka. As she has learned from his expertise, she has found a passion in preventative care medicine. As an Advance Practice Provider (APP) Megan is excellent in diagnosing, treating, and managing cases as an Internist. Megan grew up in Michigan and earned her Masters of Science in Nursing (MSN) at Oakland University. She lives in the community with her dog, Griffin.

Emily Aranyos, PA

Internal Medicine

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Emily Aranyos, PA-C completed her ​undergraduate degree from Central Michigan ​University and went on to complete her Masters ​degree at Trevecca Nazarene University in ​Nashville, TN in 2016. She has experience in ​Emergency Medicine (McLaren, Port Huron), ​Gynecologic Oncology, and Surgical Oncology. ​She has over 8 years of experience as a Physician ​Assistant. She is a member of MAPA and AAPA. ​She lives here in the community with her ​husband, daughter, and dog, Chip. We are ​thrilled to have her as a part of our Care Team.

Andrea Krane, NP

Internal Medicine

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Andrea Krane, N.P.-C joined our urgent care ​and internal medicine office in 2023. She ​earned her Bachelor’s degree from Oakland ​University and her Master of Science in ​Nursing from Michigan State University. ​Her past experience includes Family ​Medicine, Breast Surgical Care with ​Corewell Health, and urgent care medicine. ​She also helps the next generation of Nurse ​Practitioners as a preceptor. She lives with ​her husband and enjoys outdoor activities in ​her free time.

Our Services

Clarkston Internal Medicine provides top-notch care in Internal Medicine, Adult Primary Care.

  • Complete Physical
  • Medicare Annual ​Wellness Visits
  • Routine Care
  • Acute illness
  • Acute injuries
  • EKG
  • Standard X-Rays
  • Pulmonary Function ​Test (PFT)
  • Lab tests
  • Vaccines
  • Same-Day
  • Weight loss clinic
  • Care Management
  • Telemedicine
  • Advance Care Planning
  • Transitional Care ​Management

Are you looking for a healthy

weight loss option?

Dr. Elmokdad is Board-Certified in Obesity Medicine. As a bariatrician, she is an expert at diagnosing, treating, and overall medical management of obesity and weight-related comorbidities. She utilizes FDA approved medications along with lifestyle modifications and surgical referral, when appropriate. Additionally, she works closely with bariatric surgeons to help augment surgical weight loss results and avoid/treat weight regain in the setting of bariatric surgery.

Schedule your appointment today, to start your personalized weight loss journey.

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medical stethoscope on background health care background.

Chronic Care Management

Karen Greatorex, R.N.

Chronic Care Manager

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Karen joined our team in 2022. She has over 10 years of experience as a Registered Nurse (RN). She has a patient-focused approach that truly shows the natural caregiver she is. We are thrilled to have her as part of your care team. Karen lives in the community with her husband. She has 2 young adult daughters.

Areas of focus for

chronic Care Management

  • Transition Care Management
    • helping patients and caregivers navigate life after ​hospitalization
    • Medication reconciliation
  • Chronic Disease management
    • Education
    • Support
  • Community Resources
  • Health goals
  • Advanced Care Planning
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Billing Department

  • Most insurance plans accepted, excluding Michigan Medicaid plans.
  • Copayments, Coinsurances, and Deductibles are due at time of service.
  • Payment Plans are available, please contact the billing office for arrangements. (248) 625-9511
  • Payments made online will be reconciled with the billing department after processed.
  • Payment site does not show current balance. Please refer to your statement or contact the billing office for current balance.
  • MyChart payments are not available at this time.
  • We accept the following forms of payment online
    • Visa
    • Mastercard
    • Discover


Prescription Renewals

  • We aim to complete refill requests within 24 hours but may take up to 72 hours.
  • To request refills:
    • contact your pharmacy
    • leave a message on the prescription voicemail
    • MyChart request

Referral Request

The patient is responsible for knowing if their insurance requires a referral. To request an referral, please leave a message on the referral voicemail. For urgent or emergent referrals, please contact receptionist for referral confirmation.

Test Results

All patients are contacted with their results, regardless of the outcome. You may receive notice from either:

  • mailed notification
  • phone contact
  • MyChart notification

No Show

  • Appointments are scheduled time reserved for you, when a No Show happens it hinders our ability to get another patient in with their provider. For this, we have accessed a No Show Fee, as follows:
  • $25.00, second or more
  • $30.00, Physical

Copays, Special Letters and Forms

  • Copay, co-insurance are due at time of service.
  • Special Letters from providers are charged at $25.00, per letter, to complete.
  • Forms (ex: Disability forms) are charged at $25.00 to complete.

Same-Day Appointment

Same-Day Appointments are available Monday through Friday 8:00 am to 6:00 pm.

  • Call
  • Book online, MyChart
  • Walk-In, use Independence Urgent Care’s entrance

Hospitalist Services of Michigan

“Quality Care First, Customer Satisfaction Daily, Integrity Always”

7188 N. Main Street, Clarkston Mi 48346 P(248) 625-0372

Our Mission

Hospitalist Services of Michigan offers assistance to Primary Care Physicians, Surgeons, and Sub-Specialists with comprehensive care of hospitalized patients at DMC Huron Valley Sinai Hospital. Our service is focused on excellence, quality patient care, and patient satisfaction. Service offerings are customized to meet your specific needs. We are confident you will find our services valuable in your delivery of excellent patient care. We look forward to the opportunity to partner with you.

-Bashar Okka, M.D., Director and Founder

Services we provide

  • Comprehensive hospital care for patients
  • Medical consultations for general surgical patients
  • Medical consultations for cardiac, orthopedic, neurological, neurosurgical and behavioral medicine patients.
  • Preoperative evaluations
  • Postoperative care
  • Hospital coverage on weekends, vacations and other scheduled times as requested

Area of focus

  • Active presence in the hospital
  • Active communications from point of admission, to time of discharge, including critical milestones
  • Quality patient care provided as if the patient were our own
  • Specialty consultations as requested in accordance with PCP preference
  • Services end at point of discharge and all patients are instructed to follow-up with their PCP. There is no attempt to provide outpatient care beyond point of discharge

Independence Urgent Care

Meet the Providers

Emily Aranyos, P.A.-C

Emily received her Masters from Trevecca Nazarene University in Nashville, TN in 2016. She has experience in Emergency Medicine, Gynecologic Oncology and Surgical Oncology. We are excited to have her expertise and passion in our urgent care

Andrea Krane, N.P.-C

Andrea earned her Masters from Michigan State University. She has over 4 years of experience in Family Medicine as a Nurse Practitioner. We are very please to have her join our team serving the community.


  • Acute Illnesses
  • Injuries
  • Laceration repair
  • Pain
  • Urinary tract infection (UTI)
  • Lab tests available
  • X-Rays available
  • IV hydration
  • EKG
  • Breathing Treatments
  • Sports Physical


7192 N. Main Street

Clarkston, Mi 48346

Phone and Fax

(248) 384-8600

(248) 707-8972


Monday - Friday

8:00 am to 6:00 pm

First class medical team

Clarkston Internal Medicine participates in a Medicare ​approved Accountable Care Organization (ACO). We have ​partnered with Evolent Health. The goal of this partnership is to ​improve quality and care for our Medicare patients.

We are able to do this with the Care Team from Evolent, who ​offer Care Management Services, Advance Care Planning ​Services, and many more. Talk to your provider today, to see if ​you are eligible for these services.

Clarkston internal medicine, PC

Get in Touch

Mailing Address

7188 N. Main Street, Clarkston, Mi 48346

Email Address

Phone Number and Fax Number

P(248) 625-1600 F(248) 625-0239

Office Manager

Sara Beebe

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