Charles R. Grubb, DO
Family Medicine Physician · Easton, PA
Charles R. Grubb, DO is a family medicine physician with a practice address in Easton, Pennsylvania, and NPI 1780644831, issued on Mar 24, 2006. Check the license (Pennsylvania OS003693L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Charles R. Grubb
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- OS003693L PA
25MB03357700 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 3794 Hecktown RD Ste 250, Easton, PA 18045
- Phone
- (484) 544-0122
- Enumerated
- Mar 24, 2006
- Record last updated
- Sep 26, 2022
- Medicaid ID
- 2862905 NJ
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 7,483 in Pennsylvania → Look up another NPI →
Also registered at 3794 Hecktown RD Ste 250
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Haley Stackhouse, PA-CMedical Physician Assistant1396342994
Verify Charles R. Grubb in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS003693LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average family medicine physician in 2024
70 Medicare Part D claims for 35 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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.
Charles R. Grubb among 7,483 family medicine physician records in Pennsylvania
Charles R. Grubb, DO 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 updated2022 · 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).
60 family medicine physician records list a practice address in Easton
They are 60 of the 1,535 NPPES records with a practice address in Easton, and 7,483 family medicine physician records in Pennsylvania.
All 7,483 in Pennsylvania → Every provider in Easton → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Christine Block, MDEaston, PA 180451467476879
- Kurt Braun, DOEaston, PA 180451801987961
- Douglas Caldwell, M.D.Easton, PA 180451184718462
- Mark Casaia, MDEaston, PA 180451093707150
- Edward Davis, MDPalmer Township, PA 180451861456725
- Vanessa Eiswerth, D.O.Easton, PA 180451124291034
- Leonor Forero, MDEaston, PA 180451043202161
- Anna Keane, D.O.Easton, PA 180451801060801
Common questions
What is Charles R. Grubb, DO's NPI number?
Charles R. Grubb, DO's National Provider Identifier (NPI) is 1780644831, issued on Mar 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Charles R. Grubb, DO located?
The NPPES record lists a practice address at 3794 Hecktown RD Ste 250, Easton, PA, 18045. Phone: (484) 544-0122. Providers update this record themselves, so call before visiting.
How can I verify Charles R. Grubb, DO's license?
NPPES lists Pennsylvania license number OS003693L, 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 Charles R. Grubb, DO prescribe under Medicare Part D?
In 2024, Charles R. Grubb, DO had 70 Medicare Part D claims for 35 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.