Alan Keiser, D.O.
Family Medicine Physician · Schwenksville, PA
Alan Keiser, D.O. is a family medicine physician with a practice address in Schwenksville, Pennsylvania, and NPI 1982786786, issued on Oct 20, 2006. Check the license (Pennsylvania OS004840L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Alan Keiser
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- OS004840L PA
Self-reported in NPPES; status is on the state search - Practice location
- 596 Main St, Schwenksville, PA 19473
- Phone
- (610) 287-8129
- Enumerated
- Oct 20, 2006
- Record last updated
- Feb 2, 2017 (not updated in 9 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 7,483 in Pennsylvania → Look up another NPI →
Verify Alan Keiser in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS004840LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% more Medicare Part D claims than the average family medicine physician in 2024
4,784 Medicare Part D claims for 567 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 34 claims were for opioids.
Most prescribed
- Atorvastatin Calcium507 claims
- Lisinopril254 claims
- Amlodipine Besylate251 claims
- Losartan Potassium234 claims
- Levothyroxine Sodium167 claims
- Hydrochlorothiazide165 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.
Alan Keiser among 7,483 family medicine physician records in Pennsylvania
Alan Keiser, D.O. is one of 7,483 family medicine physician records with a practice address in Pennsylvania. 79% 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 12% of them.
- NPI issued2006 · 12% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2017 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 family medicine physician records list a practice address in Schwenksville
They are 6 of the 84 NPPES records with a practice address in Schwenksville, and 7,483 family medicine physician records in Pennsylvania.
All 7,483 in Pennsylvania → Every provider in Schwenksville → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Dennis Debias, MDSchwenksville, PA 194731063496321
- Gregory Hill, M.D.Schwenksville, PA 194731528061090
- Mary Kadysh, M.D.Schwenksville, PA 194731518226760
- York Yang, M.DSchwenksville, PA 194731649317058
- Daniel Lyons, M.D.Schwenksville, PA 194741619292679
- Nicholas Battista, CRNP, FNP-CSpring City, PA 194751184573743
- Lois Snyder, M.D.Spring City, PA 194751265466338
- Dennis Cakouros, D.O.Spring House, PA 194771659338440
Common questions
What is Alan Keiser, D.O.'s NPI number?
Alan Keiser, D.O.'s National Provider Identifier (NPI) is 1982786786, issued on Oct 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alan Keiser, D.O. located?
The NPPES record lists a practice address at 596 Main St, Schwenksville, PA, 19473. Phone: (610) 287-8129. Providers update this record themselves, so call before visiting.
How can I verify Alan Keiser, D.O.'s license?
NPPES lists Pennsylvania license number OS004840L, 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 Alan Keiser, D.O. prescribe under Medicare Part D?
In 2024, Alan Keiser, D.O. had 4,784 Medicare Part D claims for 567 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.