Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. Bashar Okka , MD

Internal Medicine • Clarkston, MI

Active NPI 1942210299 Individual Practitioner Male Practitioner Accepts Medicare assignment Telehealth (some services)
Practice location in NPPES

7188 N Main St
Clarkston, MI 483461571

Call 2486251600 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

7188 N Main St

Clarkston, MI 483461571

Telephone 2486251600
Fax 2486250239
Organization at the Same NPPES Address or Phone
Clarkston Internal Medicine, P.c. Facility NPI 1417085085

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

NPPES lists 2 distinct additional practice-address records in Bloomfield Hills, MI; Clarkston, MI. See the list

Source: CMS NPPES NPI Registry, practice location records; release date unavailable.

CMS Doctors and Clinicians lists 2 distinct group names: Clarkston Internal Medicine, P.C.; Mercy Hospitalists, Pllc. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Graduation Year

1989

Medicare patients

701 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.

Medicare-allowed amount

About $389,559 in 2024

The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

Paid by Medicare

About $315,648 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

30-day fills

23,061 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$1,004,599 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.

Open Payments general payments, program year 2025

All general payments: $702.90 across 37 records.

By nature of payment

  • Food and Beverage: $702.90 across 37 records.

Reporting-company totals (3 largest of 11)

  • Novo Nordisk Inc: $234.92 across 13 records.
  • Eli Lilly and Company: $105.50 across 6 records.
  • Amgen Inc.: $72.14 across 3 records.

A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).

Guide: How to read an Open Payments record

Years since graduation

37 years (graduated 1989)

CMS Doctors and Clinicians data list 1989 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2006

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

Telehealth (some services)

Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.

What this does not show: Telehealth (some services)

It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Okka has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Okka as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Clarkston and Michigan

Billing and prescribing volume is not a quality rating.

Medicare Part B services

More Medicare Part B services than 95% of clinicians listed under Internal Medicine in Clarkston, MI (2024, 13 clinicians with data). Median for this group: 1,034. Middle half: 313 to 1,184.

More Medicare Part B services than 95% of clinicians listed under Internal Medicine in Michigan (2024, 3,244 clinicians with data). Median for this group: 502. Middle half: 235 to 939.

Medicare-allowed amount

A higher Medicare-allowed amount than 95% of clinicians listed under Internal Medicine in Clarkston, MI (2024, 13 clinicians with data). Median for this group: $73,094. Middle half: $27,416 to $104,912.

A higher Medicare-allowed amount than 95% of clinicians listed under Internal Medicine in Michigan (2024, 3,244 clinicians with data). Median for this group: $45,163. Middle half: $22,487 to $79,883.

Paid by Medicare

A higher Medicare payment amount than 95% of clinicians listed under Internal Medicine in Clarkston, MI (2024, 13 clinicians with data). Median for this group: $61,034. Middle half: $22,537 to $82,039.

A higher Medicare payment amount than 95% of clinicians listed under Internal Medicine in Michigan (2024, 3,244 clinicians with data). Median for this group: $34,631. Middle half: $16,935 to $61,333.

Medicare Part D prescriptions

More Part D prescriptions than 80% of clinicians listed under Internal Medicine in Clarkston, MI (2024, 12 clinicians with data). Median for this group: 3,972. Middle half: 1,091 to 7,024.

More Part D prescriptions than 85% of clinicians listed under Internal Medicine in Michigan (2024, 3,463 clinicians with data). Median for this group: 801. Middle half: 94 to 5,032.

Part D drug cost

A higher Part D drug cost than 80% of clinicians listed under Internal Medicine in Clarkston, MI (2024, 12 clinicians with data). Median for this group: $254,673. Middle half: $60,819 to $707,690.

A higher Part D drug cost than 90% of clinicians listed under Internal Medicine in Michigan (2024, 3,463 clinicians with data). Median for this group: $66,958. Middle half: $1,946 to $462,816.

22 active clinicians are listed under Internal Medicine with a practice address in Clarkston, MI (5,741 in Michigan).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Clarkston

36.4% of these 22 clinicians have the CMS telehealth indicator.

59.1% of these 22 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments · Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): 37 records totaling $702.90.

Manufacturer Payment Nature Product Type Amount ($)
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
LEQVIO General $31.51
Amgen Inc.
Food and Beverage
In-kind items and services
KRYSTEXXA General $28.14
Amgen Inc.
Food and Beverage
In-kind items and services
KRYSTEXXA General $25.95
Eli Lilly and Company
Food and Beverage
In-kind items and services
JARDIANCE General $25.22
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Rybelsus General $24.75
Abbott Laboratories
Food and Beverage
In-kind items and services
FREESTYLE LIBRE 3 General $23.90
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Ozempic General $22.10
GlaxoSmithKline, LLC.
Food and Beverage
In-kind items and services
AREXVY General $21.73
GlaxoSmithKline, LLC.
Food and Beverage
In-kind items and services
AREXVY General $21.45
Eli Lilly and Company
Food and Beverage
In-kind items and services
JARDIANCE General $21.00
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Rybelsus General $20.90
Bristol Myers Squibb Company
Food and Beverage
Cash or cash equivalent
ELIQUIS General $20.83
Pfizer Inc.
Food and Beverage
In-kind items and services
ELIQUIS General $19.55
ABBVIE INC.
Food and Beverage
In-kind items and services
QULIPTA General $19.05
Otsuka America Pharmaceutical, Inc.
Food and Beverage
In-kind items and services
REXULTI General $18.82
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Rybelsus General $18.50
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Wegovy General $18.23
Amgen Inc.
Food and Beverage
In-kind items and services
EVENITY General $18.05
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Wegovy General $17.89
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
AIRSUPRA General $17.78
Novo Nordisk Inc
Food and Beverage
In-kind items and services
— General $17.73
Pfizer Inc.
Food and Beverage
In-kind items and services
PREVNAR 20 General $17.57
GlaxoSmithKline, LLC.
Food and Beverage
In-kind items and services
TRELEGY ELLIPTA General $17.01
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Ozempic General $16.90
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Ozempic General $16.66

(top 25 shown)

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B · Data Year 2024
Reporting Year:

CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
1,041 438 $213.08 $127.96
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
560 364 $147.80 $90.82
J2919 Injection, methylprednisolone sodium succinate, 5 mg
325 13 $15.00 $0.29
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
289 289 $145.00 $129.73
99497 Advance care planning, first 30 minutes
239 239 $95.00 $82.28
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
209 101 $90.00 $79.04
G0008 Administration of influenza virus vaccine
204 199 $35.00 $32.71
90653 Influenza vaccine, inactivated
199 199 $95.00 $81.00
G0447 Face-to-face behavioral counseling for obesity, 15 minutes
159 79 $35.00 $25.33
81002 Urinalysis, manual test
142 102 $10.00 $3.31
90480 Admn sarscov2 vacc 1 dose
114 108 $50.00 $43.25
91320 Sarscv2 vac 30mcg trs-suc im
114 108 $150.00 $144.25
G0009 Administration of pneumococcal vaccine
111 111 $35.00 $32.71
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use
106 106 $325.00 $287.76
87804 Detection test by immunoassay with direct visual observation for influenza virus
72 65 $20.00 $16.22
96372 Injection of drug or substance under skin or into muscle
61 46 $35.00 $13.97
87811 Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19)
60 56 $50.00 $39.87
G0444 Annual depression screening, 5 to 15 minutes
57 57 $30.00 $18.28
99496 Transitional care management services for problem of high complexity
54 44 $375.00 $278.29
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg
54 14 $10.00 $0.99
93000 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
51 48 $47.00 $14.13
87635 Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen
39 37 $95.00 $50.28
71046 X-ray of chest, 2 views
29 28 $55.00 $22.84
94010 Test to measure expiratory airflow and volume
29 28 $84.00 $27.02
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and
27 25 $100.00 $53.44

(top 25 shown)

Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D · Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Atorvastatin Calcium Atorvastatin Calcium 675 55,830 $10,471.64 197
Losartan Potassium Losartan Potassium 476 39,334 $7,282.86 152
Amlodipine Besylate Amlodipine Besylate 472 39,124 $4,022.23 144
Levothyroxine Sodium Levothyroxine Sodium 422 34,118 $5,501.86 112
Metoprolol Succinate Metoprolol Succinate 383 32,233 $6,792.13 110
Losartan-Hydrochlorothiazide Losartan/Hydrochlorothiazide 296 24,360 $7,301.50 81
Lisinopril Lisinopril 259 23,024 $2,490.89 74
Metformin Hcl Metformin Hcl 254 21,688 $3,084.85 71
Omeprazole Omeprazole 250 21,099 $3,517.67 77
Tamsulosin Hcl Tamsulosin Hcl 238 19,427 $4,547.72 71
Rosuvastatin Calcium Rosuvastatin Calcium 236 20,308 $4,615.66 72
Simvastatin Simvastatin 234 19,920 $2,295.11 68
Hydrochlorothiazide Hydrochlorothiazide 229 18,930 $1,165.59 73
Metoprolol Tartrate Metoprolol Tartrate 162 12,403 $1,512.64 44
Furosemide Furosemide 160 11,813 $1,155.54 53
Eliquis Apixaban 154 10,835 $197,877.49 38
Sertraline Hcl Sertraline Hcl 148 10,981 $1,720.11 43
Finasteride Finasteride 143 11,168 $2,659.75 40
Hydralazine Hcl Hydralazine Hcl 130 10,161 $2,578.91 41
Clopidogrel Clopidogrel Bisulfate 121 10,002 $2,711.08 37
Potassium Chloride Potassium Chloride 116 9,643 $4,373.31 35
Meloxicam Meloxicam 110 4,834 $367.92 47
Pravastatin Sodium Pravastatin Sodium 110 9,840 $1,790.75 33
Shingrix Varicella-Zoster Ge/As01b/Pf 110 835 $24,359.18 76
Pantoprazole Sodium Pantoprazole Sodium 104 8,234 $2,151.74 37

(top 25 shown)

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2025-10-29
Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

License # reported to NPPES MI 4301064241

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Michigan Department of Licensing and Regulatory Affairs.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - INTERNAL MEDICINE

Medicare Enrollment ID

I20070713000737

Enrollment State Jurisdiction

MI

PECOS Control ID

2365467495

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Mercy Hospitalists, Pllc

44405 Woodward Ave, Pontiac, MI 483415023

Phone: 2483385645

Clarkston Internal Medicine, P.c.

7188 N Main St, Clarkston, MI 483461571

Phone: 2486251600

Mercy Hospitalists, Pllc

10 W Square Lake Rd, Bloomfield Hills, MI 483020466

Phone: 24828340001

Secondary Practice Locations

7192 N Main St

Clarkston, MI 483461571

Phone: 2483848600

10 W Square Lake Rd Ste 103

Bloomfield Hills, MI 483020466

Phone: 2482834000

10 W Square Lake Rd Ste 103

Bloomfield Hills, MI 483020466

Phone: 2482834000

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

4 listed
Dr. Nathan Chase , MD

Internal Medicine

NPI 1174533491

Doctor of Medicine (M.D.)

Megan Clemence , NP-C

Nurse Practitioner - Family

NPI 1457911281

Nurse Practitioner (Certified)

NPI 1578054573

Doctor of Medicine (M.D.)

Dr. Rosa Mirijanian , MD

Internal Medicine

NPI 1174533400

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

8 Historical Events
📍
Updated Practice Location October 29, 2025

Registered at 7188 N MAIN ST, CLARKSTON, MI 483461571 (Tel: 2486251600)

📍
Updated Business Mailing Address October 29, 2025

Registered at 7188 N MAIN ST, CLARKSTON, MI 483461571 (Tel: 2486251600)

âś…
NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍
Practice Location (Initial Record) July 08, 2007

Registered at 7210 N MAIN ST, SUITE 200, CLARKSTON, MI 483461575 (Tel: 2486251600)

📍
Business Mailing Address (Initial Record) July 08, 2007

Registered at 7210 N MAIN ST, SUITE 200, CLARKSTON, MI 483461575 (Tel: 2486251600)

👤
Provider Name / Credentials (Initial Record) July 08, 2007

Recorded as BASHAR OKKA, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Internal Medicine (license number reported to NPPES: MI 4301064241)

🟢
Initial NPI Registration & Enumeration August 09, 2006

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1942210299
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: August 09, 2006
Last Update: October 29, 2025
Sole Proprietor: No

Other Internal Medicine Providers in Clarkston

All Internal Medicine Providers in Clarkston

Mailing Address

7188 N Main St

Clarkston, MI 483461571

Phone: 2486251600

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.