William Callahan, D.O.
Family Medicine Physician · Blue Bell, PA
William Callahan, D.O. is a family medicine physician with a practice address in Blue Bell, Pennsylvania, and NPI 1386907434, issued on Jun 22, 2012. Check the license (Pennsylvania OS016737, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- William Callahan
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- OS016737 PA
Self-reported in NPPES; status is on the state search - Practice location
- 721 Arbor Way Ste 105, Blue Bell, PA 19422
- Phone
- (215) 646-9220
- Enumerated
- Jun 22, 2012
- Record last updated
- Oct 21, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (215) 646-0715
- Medicaid ID
- 103017327 PA
- Medicare enrollment
- Enrolled (PECOS I20150610002210); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2012
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 721 Arbor Way Ste 105
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Daniel Fischer, MDFamily Medicine Physician1922568849
- Zachariah Gibson, MDFamily Medicine Physician1689256927
- Gerald Hansen, D.O.Family Medicine Physician1467987743
- Mary McGinley, MDInternal Medicine Physician1427037365
Verify William Callahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS016737Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2% fewer Medicare Part D claims than the average family medicine physician in 2024
3,473 Medicare Part D claims for 440 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 127 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium262 claims
- Atorvastatin Calcium210 claims
- Amlodipine Besylate175 claims
- Lisinopril129 claims
- Losartan Potassium122 claims
- Levothyroxine Sodium83 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.
Bills Medicare through 2 group practices
- Abington Memorial HospitalJenkintown, PA
- Einstein Community Health Associates IncPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
26 family medicine physician records list a practice address in Blue Bell
They are 26 of the 494 NPPES records with a practice address in Blue Bell, and 7,483 family medicine physician records in Pennsylvania.
All 26 in Blue Bell → All 7,483 in Pennsylvania → Every provider in Blue Bell →
Other family medicine physician records in Pennsylvania
- Christopher AaronCresson, PA1083879860
- Jose Abad, MDPittsburgh, PA1295962546
- Mario Abad, MDDuncannon, PA1710022975
- Ray Abarintos, MDPhiladelphia, PA1417339516
- Jasim Abbasi, DOErie, PA1396537452
- Daived Abboud, M.D.Allentown, PA1295189322
- Ihab Abdelaal, D.O.Macungie, PA1588944938
- Tony Abdelmaseeh, M.DJermyn, PA1073910923
- Adam Abdulally, MDPittsburgh, PA1184861544
- Maimuna AbdullahiLebanon, PA1477344018
Common questions
What is William Callahan, D.O.'s NPI number?
William Callahan, D.O.'s National Provider Identifier (NPI) is 1386907434, issued on Jun 22, 2012. An NPI identifies a provider in billing; it is not a license.
Where is William Callahan, D.O. located?
The NPPES record lists a practice address at 721 Arbor Way Ste 105, Blue Bell, PA, 19422. Phone: (215) 646-9220. Providers update this record themselves, so call before visiting.
How can I verify William Callahan, D.O.'s license?
NPPES lists Pennsylvania license number OS016737, 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 Callahan, D.O. prescribe under Medicare Part D?
In 2024, William Callahan, D.O. had 3,473 Medicare Part D claims for 440 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.