Gary Steven Horwith, M.D.
Infectious Disease Physician · Oley, PA
Gary Steven Horwith, M.D. is an infectious disease physician with a practice address in Oley, Pennsylvania, and NPI 1972734440, issued on Aug 1, 2009. Check the license (Pennsylvania MD034658E, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Gary Steven Horwith
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- MD034658E PA
Self-reported in NPPES; status is on the state search - Practice location
- 125 Boyer RD, Oley, PA 19547
- Phone
- (301) 602-7401
- Enumerated
- Aug 1, 2009
- Record last updated
- Jan 3, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 545 in Pennsylvania → Look up another NPI →
Verify Gary Steven Horwith in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD034658ECheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average infectious disease physician in 2024
27 Medicare Part D claims, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Gary Steven Horwith among 545 infectious disease physician records in Pennsylvania
Gary Steven Horwith, 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 fileNo · 70% of these records are
- Record last updated2020 · 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).
1 infectious disease physician record lists a practice address in Oley
They are 1 of the 28 NPPES records with a practice address in Oley, and 545 infectious disease physician records in Pennsylvania.
All 545 in Pennsylvania → Every provider in Oley → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Chinwe Anekwe, M.D.West Reading, PA 196111023676020
- Edward BlanchardWest Reading, PA 196111770767055
- Kenneth Debenedictis, MDWest Reading, PA 196111073737409
- Robert Jones, D.O.West Reading, PA 196111821056854
- Eunjung Kim, M.D.West Reading, PA 196111689923427
- Kathleen McElwee, M.D.West Reading, PA 196111427204940
- Robert Pease, M.D.West Reading, PA 196111790198596
- Debra Powell, M.D.West Reading, PA 196111649483272
Common questions
What is Gary Steven Horwith, M.D.'s NPI number?
Gary Steven Horwith, M.D.'s National Provider Identifier (NPI) is 1972734440, issued on Aug 1, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Gary Steven Horwith, M.D. located?
The NPPES record lists a practice address at 125 Boyer RD, Oley, PA, 19547. Phone: (301) 602-7401. Providers update this record themselves, so call before visiting.
How can I verify Gary Steven Horwith, M.D.'s license?
NPPES lists Pennsylvania license number MD034658E, 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 Gary Steven Horwith, M.D. prescribe under Medicare Part D?
In 2024, Gary Steven Horwith, M.D. had 27 Medicare Part D claims; the average among infectious disease physician prescribers was 689. 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.