Mark L. Bierhoff, MD
Gastroenterology Physician · Philadelphia, PA
Mark L. Bierhoff, MD is a gastroenterology physician with a practice address in Philadelphia, Pennsylvania, and NPI 1568527372, issued on Dec 22, 2006. Check the license (Pennsylvania MD026056E, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Mark L. Bierhoff
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- MD026056E PA
Self-reported in NPPES; status is on the state search - Practice location
- 2000 Grant Ave, Philadelphia, PA 19115
- Phone
- (215) 333-1776
- Enumerated
- Dec 22, 2006
- Record last updated
- Mar 21, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (215) 333-0653
- Medicaid ID
- 0011077810002 PA
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,049 in Pennsylvania → Look up another NPI →
Also registered at 2000 Grant Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Eugene Mayer, MDGastroenterology Physician1912062720
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- Richard Sohn, M.D.Vascular Surgery Physician1184659807
Verify Mark L. Bierhoff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD026056ECheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average gastroenterology physician in 2024
316 Medicare Part D claims for 96 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Omeprazole48 claims
- Linzess38 claims
- Famotidine25 claims
- Mesalamine18 claims
- Xifaxan18 claims
- Dicyclomine Hcl14 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 L. Bierhoff among 1,049 gastroenterology physician records in Pennsylvania
Mark L. Bierhoff, MD is one of 1,049 gastroenterology physician records with a practice address in Pennsylvania. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 47% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 73% of these records are
- Record last updated2011 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Pennsylvania
There are 1,049 gastroenterology physician records in Pennsylvania.
All 1,049 in Pennsylvania → Every provider in Philadelphia → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Lawrence Grossman, MDPhiladelphia, PA 191151477618270
- Eugene Mayer, MDPhiladelphia, PA 191151912062720
- Matthew Cohen, M.D.Philadelphia, PA 191141558304014
- Jeffrey Greenspan, D.O.Philadelphia, PA 191141356376479
- Michael Resnick, D.O.Philadelphia, PA 191141336170638
- Oleg Volchonok, M.D.Philadelphia, PA 191161275571945
- William Battle, M.D.Philadelphia, PA 191111679593248
- Corey Brotz, MDPhiladelphia, PA 191111609081041
Common questions
What is Mark L. Bierhoff, MD's NPI number?
Mark L. Bierhoff, MD's National Provider Identifier (NPI) is 1568527372, issued on Dec 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark L. Bierhoff, MD located?
The NPPES record lists a practice address at 2000 Grant Ave, Philadelphia, PA, 19115. Phone: (215) 333-1776. Providers update this record themselves, so call before visiting.
How can I verify Mark L. Bierhoff, MD's license?
NPPES lists Pennsylvania license number MD026056E, 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 Mark L. Bierhoff, MD prescribe under Medicare Part D?
In 2024, Mark L. Bierhoff, MD had 316 Medicare Part D claims for 96 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.