John Michael Granger, M.D.
Infectious Disease Physician · Lancaster, PA
John Michael Granger, M.D. is an infectious disease physician with a practice address in Lancaster, Pennsylvania, and NPI 1467462630, issued on Aug 9, 2006. Check the license (Pennsylvania MD436668, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- John Michael Granger
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License numbers
- MD436668 PA
C10008084 DE
Self-reported in NPPES; status is on the state search - Practice location
- 2106 Harrisburg Pike, Lancaster, PA 17604
- Phone
- (717) 544-3517
- Enumerated
- Aug 9, 2006
- Record last updated
- Jun 28, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (717) 544-3520
- Medicaid ID
- 102039150 PA
- Medicare enrollment
- Enrolled (PECOS I20090617000735); accepts Medicare assignment
- Medical or professional school
- Medical College Of Ohio, 2003
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 545 in Pennsylvania → Look up another NPI →
Also registered at 2106 Harrisburg Pike
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Duane Furman, PA-CMedical Physician Assistant1992762157
- Kenneth Lessans, MDUrology Physician1992736169
- Deborah Riley, M.D.Infectious Disease Physician1699731323
- Leanne Schimke, CRNPFamily Nurse Practitioner1194722678
Verify John Michael Granger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD436668Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% fewer Medicare Part D claims than the average infectious disease physician in 2024
540 Medicare Part D claims for 218 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Amoxicillin-Clavulanate Potass47 claims
- Ciprofloxacin Hcl45 claims
- Ceftriaxone34 claims
- Cefadroxil30 claims
- Daptomycin29 claims
- Fluconazole27 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 one group practice
- Lancaster General Medical GroupLancaster, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Michael Granger among 545 infectious disease physician records in Pennsylvania
John Michael Granger, 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 59% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2003 · median 2005 among the 381 with a school on file
- Record last updated2011 · 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).
Infectious Disease Physician providers in Pennsylvania
There are 545 infectious disease physician records in Pennsylvania.
All 545 in Pennsylvania → Every provider in Lancaster → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Deborah Riley, M.D.Lancaster, PA 176041699731323
- Kenneth Brown, M.D.Lancaster, PA 176021689997371
- David Abel, D.O.Lancaster, PA 176011629362850
- Przemyslaw Bednarz, M.D.Lancaster, PA 176011205147139
- Meghan Delay, PA-CLancaster, PA 176011699628362
- Neil Greene, M.D.Lancaster, PA 176011679539423
- Joseph Kontra, M.D.Lancaster, PA 176011083670715
- Nitin Patel, MDLancaster, PA 176011710109202
Common questions
What is John Michael Granger, M.D.'s NPI number?
John Michael Granger, M.D.'s National Provider Identifier (NPI) is 1467462630, issued on Aug 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Michael Granger, M.D. located?
The NPPES record lists a practice address at 2106 Harrisburg Pike, Lancaster, PA, 17604. Phone: (717) 544-3517. Providers update this record themselves, so call before visiting.
How can I verify John Michael Granger, M.D.'s license?
NPPES lists Pennsylvania license number MD436668, 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 John Michael Granger, M.D. prescribe under Medicare Part D?
In 2024, John Michael Granger, M.D. had 540 Medicare Part D claims for 218 beneficiaries; 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.