John Alexander Viehman, M.D.
Infectious Disease Physician · Pittsburgh, PA
John Alexander Viehman, M.D. is an infectious disease physician with a practice address in Pittsburgh, Pennsylvania, and NPI 1629205877, issued on Jun 15, 2009. Check the license (Pennsylvania MD453968, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- John Alexander Viehman
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- MD453968 PA
Self-reported in NPPES; status is on the state search - Practice location
- 3601 5TH Ave, Pittsburgh, PA 15213
- Phone
- (412) 647-7228
- Enumerated
- Jun 15, 2009
- Record last updated
- Jul 27, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 103012349 PA
- Medicare enrollment
- Enrolled (PECOS I20150721001290); accepts Medicare assignment
- Medical or professional school
- Temple University School Of Medicine, 2009
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 545 in Pennsylvania → Look up another NPI →
Also registered at 3601 5TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rima Abdel MassihInternal Medicine Physician1003079914
- Christina Abriola, R.D.Registered Dietitian1356647507
- Susan Adamczyk, RDRegistered Dietitian1831524263
- Rohit Aggarwal, M.D.Rheumatology Physician1538340138
- Haruko Akatsu, MDSpecialist1922072370
- Charles Atwood, MDPulmonary Disease Physician1508838905
Verify John Alexander Viehman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD453968Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average infectious disease physician in 2024
413 Medicare Part D claims for 80 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims.
Most prescribed
- Amikacin Sulfate42 claims
- Ampicillin Sodium33 claims
- Amoxicillin30 claims
- Sulfamethoxazole-Trimethoprim25 claims
- Cefadroxil24 claims
- Gentamicin Sulfate23 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 77.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- University OF Pittsburgh PhysiciansPittsburgh, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Alexander Viehman among 545 infectious disease physician records in Pennsylvania
John Alexander Viehman, M.D. is one of 545 infectious disease physician records with a practice address in Pennsylvania. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 59% of them.
- NPI issued2009 · 59% of these records are older, 38% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2009 · median 2005 among the 381 with a school on file
- Record last updated2021 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Pennsylvania
There are 545 infectious disease physician records in Pennsylvania.
All 545 in Pennsylvania → Every provider in Pittsburgh → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Cybele Abad, M.D.Pittsburgh, PA 152131619900453
- Tatiana Bogdanovich, M.D.Pittsburgh, PA 152131447443882
- Madhu Chhanda ChoudharyPittsburgh, PA 152131255367793
- Ross Cranston, MDPittsburgh, PA 152131841216959
- Yohei Doi, M.D.Pittsburgh, PA 152131316149719
- Jae Ho Hong, M.D.Pittsburgh, PA 152131659546117
- Heather Hughes, MDPittsburgh, PA 152131437317849
- Eun Jeong KwakPittsburgh, PA 152131134193527
Common questions
What is John Alexander Viehman, M.D.'s NPI number?
John Alexander Viehman, M.D.'s National Provider Identifier (NPI) is 1629205877, issued on Jun 15, 2009. An NPI identifies a provider in billing; it is not a license.
Where is John Alexander Viehman, M.D. located?
The NPPES record lists a practice address at 3601 5TH Ave, Pittsburgh, PA, 15213. Phone: (412) 647-7228. Providers update this record themselves, so call before visiting.
How can I verify John Alexander Viehman, M.D.'s license?
NPPES lists Pennsylvania license number MD453968, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Alexander Viehman, M.D. prescribe under Medicare Part D?
In 2024, John Alexander Viehman, M.D. had 413 Medicare Part D claims for 80 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is John Alexander Viehman, M.D.'s MIPS final score?
The 2023 MIPS final score is 77.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.