William Haberstroh, D.O.
Gastroenterology Physician · Bryn Mawr, PA
William Haberstroh, D.O. is a gastroenterology physician with a practice address in Bryn Mawr, Pennsylvania, and NPI 1346773462, issued on Apr 5, 2017. Check the license (Pennsylvania OS022869, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- William Haberstroh
- Credential
- D.O.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- OS022869 PA
Self-reported in NPPES; status is on the state search - Practice location
- 825 Old Lancaster RD Ste 340, Bryn Mawr, PA 19010
- Phone
- (610) 527-9570
- Enumerated
- Apr 5, 2017
- Record last updated
- Aug 12, 2025
- Fax
- (610) 527-8805
- Medicare enrollment
- Enrolled (PECOS I20231212003421); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2017
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,049 in Pennsylvania → Look up another NPI →
Also registered at 825 Old Lancaster RD Ste 340
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rachel Barnet, PA-CPhysician Assistant1699359950
- Nicole Costa, CRNPFamily Nurse Practitioner1467813154
- Nikhita Dharbhamulla, M.D.Gastroenterology Physician1255715090
- Kaitlyn Fine, PAPhysician Assistant1548798135
- Julianna TantumGastroenterology Physician1437786159
- Daniel Weinblatt, DOGastroenterology Physician1801423884
Verify William Haberstroh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS022869Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average gastroenterology physician in 2024
226 Medicare Part D claims for 97 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Omeprazole77 claims
- Pantoprazole Sodium29 claims
- Esomeprazole Magnesium16 claims
- Dicyclomine Hcl13 claims
- Linzess11 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: $2,510.06
159 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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.
Bills Medicare through one group practice
- Bryn Mawr Medical Specialists AssociationBryn Mawr, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Haberstroh among 1,049 gastroenterology physician records in Pennsylvania
William Haberstroh, D.O. 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 2017, is newer than 90% of them.
- NPI issued2017 · 90% of these records are older, 7% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2017 · median 2003 among the 769 with a school on file
- Record last updated2025 · 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 Bryn Mawr → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Robert Atkins, M.D.Bryn Mawr, PA 190101023049400
- Jack Collazzo, M.D.Bryn Mawr, PA 190101891725891
- Nikhita Dharbhamulla, M.D.Bryn Mawr, PA 190101255715090
- Robert Levitt, M.D.Bryn Mawr, PA 190101225054398
- Thomas McKenna, M.D.Bryn Mawr, PA 190101063724490
- Toan Nguyen, M.D.Bryn Mawr, PA 190101487685079
- Jeffrey Retig, M.D.Bryn Mawr, PA 190101225053465
- Michelle Springer, D.O.Bryn Mawr, PA 190101235367525
Common questions
What is William Haberstroh, D.O.'s NPI number?
William Haberstroh, D.O.'s National Provider Identifier (NPI) is 1346773462, issued on Apr 5, 2017. An NPI identifies a provider in billing; it is not a license.
Where is William Haberstroh, D.O. located?
The NPPES record lists a practice address at 825 Old Lancaster RD Ste 340, Bryn Mawr, PA, 19010. Phone: (610) 527-9570. Providers update this record themselves, so call before visiting.
How can I verify William Haberstroh, D.O.'s license?
NPPES lists Pennsylvania license number OS022869, 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 William Haberstroh, D.O. prescribe under Medicare Part D?
In 2024, William Haberstroh, D.O. had 226 Medicare Part D claims for 97 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.