Mark Weissman, M.D.
Internal Medicine Physician · Bethany, OK
Mark Weissman, M.D. is an internal medicine physician with a practice address in Bethany, Oklahoma, and NPI 1336365568, issued on Apr 17, 2007. Check the license (Oklahoma 15521, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Mark Weissman
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 15521 OK
Self-reported in NPPES; status is on the state search - Practice location
- 7815 NW 23RD St, Bethany, OK 73008
- Phone
- (405) 792-2147
- Enumerated
- Apr 17, 2007
- Record last updated
- May 16, 2023
- Fax
- (405) 603-1465
- Medicaid ID
- 100230000A OK
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,115 in Oklahoma → Look up another NPI →
Verify Mark Weissman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and Supervision
Search for license 15521Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
54 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 69% of claims.
Most prescribed
- Albuterol Sulfate Hfa13 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.
Mark Weissman among 1,115 internal medicine physician records in Oklahoma
Mark Weissman, M.D. is one of 1,115 internal medicine physician records with a practice address in Oklahoma. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 43% of them.
- NPI issued2007 · 43% of these records are older, 50% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2023 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in Oklahoma
There are 1,115 internal medicine physician records in Oklahoma.
All 1,115 in Oklahoma → Every provider in Bethany → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Steven Brown, MDBethany, OK 730081003888462
- Dean Deason, M.D.Bethany, OK 730081841522091
- Isaac Ilaoa, D.OBethany, OK 730081336415280
- Carmen Bird Pico, MDAnadarko, OK 730051396184875
- Faris AmilEdmond, OK 730121245995646
- Sarfaraz Anwar, M.DEdmond, OK 730121467408021
- Jesse Campbell, MDEdmond, OK 730031982653721
- Audrey Goodwin, MDEdmond, OK 730131952661688
Common questions
What is Mark Weissman, M.D.'s NPI number?
Mark Weissman, M.D.'s National Provider Identifier (NPI) is 1336365568, issued on Apr 17, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark Weissman, M.D. located?
The NPPES record lists a practice address at 7815 NW 23RD St, Bethany, OK, 73008. Phone: (405) 792-2147. Providers update this record themselves, so call before visiting.
How can I verify Mark Weissman, M.D.'s license?
NPPES lists Oklahoma license number 15521, as entered by the provider. Search the Oklahoma Board of Medical Licensure and Supervision at https://www.okmedicalboard.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Weissman, M.D. prescribe under Medicare Part D?
In 2024, Mark Weissman, M.D. had 54 Medicare Part D claims; 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.