Nathanial Cole Bartosek
Internal Medicine Physician · Royal Oak, MI
Nathanial Cole Bartosek is an internal medicine physician with a practice address in Royal Oak, Michigan, and NPI 1548831381, issued on Jul 2, 2021. Check the license (Michigan 4301517845, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Nathanial Cole Bartosek
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 4301517845 MI
Self-reported in NPPES; status is on the state search - Practice location
- 3535 W 13 Mile RD Ste LL, Royal Oak, MI 48073
- Phone
- (248) 551-3000
- Enumerated
- Jul 2, 2021
- Record last updated
- Jul 1, 2026
- Medicare enrollment
- Enrolled (PECOS I20260520002458); may accept Medicare assignment
- Entity
- Type 1 · individual
Also registered at 3535 W 13 Mile RD Ste LL
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nishant Aggarwal, MDGastroenterology Physician1497327266
- Apoorva Bhan, DOPediatrics Physician1790422673
- Paul ChittickInfectious Disease Physician1578778775
- Linda Dillon, M.D.Internal Medicine Physician1891919502
- Kalli Jo Doyle, MDPediatrics Physician1417916818
- Brent FullerInternal Medicine Physician1871552646
Verify Nathanial Cole Bartosek in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301517845Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
186 Medicare Part D claims for 45 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Mounjaro12 claims
- Atorvastatin Calcium11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $248.68
2 payments; by number, the most common kind was food and beverage; the largest payer was Salix Pharmaceuticals, a division of Bausch Health US, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
218 internal medicine physician records list a practice address in Royal Oak
They are 218 of the 3,887 NPPES records with a practice address in Royal Oak, and 5,735 internal medicine physician records in Michigan.
All 218 in Royal Oak → All 5,735 in Michigan → Every provider in Royal Oak →
Other internal medicine physician records in Michigan
- Jamie Therese Abad, MDDetroit, MI1700573359
- Tomas Abalo, M.D.Iron Mountain, MI1336199975
- Ali Abbas, M.D.Pontiac, MI1972167526
- Sura Abbas, MDWarren, MI1801687405
- Ramzi Abbasi, MDSaginaw, MI1164270005
- Saadat Abbasi, MDKalamazoo, MI1912005596
- Shahzaman Abbasi, MDLansing, MI1376512111
- Youssef Abbiss, D.O.Mount Clemens, MI1982991881
- Valerie Abbott, MDSouthfield, MI1740289487
- Samer Abboud, MDSaginaw, MI1245804178
Common questions
What is Nathanial Cole Bartosek's NPI number?
Nathanial Cole Bartosek's National Provider Identifier (NPI) is 1548831381, issued on Jul 2, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Nathanial Cole Bartosek located?
The NPPES record lists a practice address at 3535 W 13 Mile RD Ste LL, Royal Oak, MI, 48073. Phone: (248) 551-3000. Providers update this record themselves, so call before visiting.
How can I verify Nathanial Cole Bartosek's license?
NPPES lists Michigan license number 4301517845, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nathanial Cole Bartosek prescribe under Medicare Part D?
In 2024, Nathanial Cole Bartosek had 186 Medicare Part D claims for 45 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.