Gary Robert Clauss, DO
Family Medicine Physician · Lancaster, PA
Gary Robert Clauss, DO is a family medicine physician with a practice address in Lancaster, Pennsylvania, and NPI 1427613157, issued on May 8, 2019. Check the license (Pennsylvania HS000214L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Gary Robert Clauss
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- HS000214L PA
Self-reported in NPPES; status is on the state search - Practice location
- 2221 Noll Dr, Lancaster, PA 17603
- Phone
- (717) 327-4694
- Enumerated
- May 8, 2019
- Record last updated
- Apr 29, 2026
- Medicare enrollment
- Enrolled (PECOS I20230216002861); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2018
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 7,483 in Pennsylvania → Look up another NPI →
Also registered at 2221 Noll Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gary Robert Clauss in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license HS000214LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% fewer Medicare Part D claims than the average family medicine physician in 2024
2,883 Medicare Part D claims for 506 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 71 claims were for opioids.
Most prescribed
- Atorvastatin Calcium173 claims
- Lisinopril100 claims
- Gabapentin89 claims
- Levothyroxine Sodium88 claims
- Losartan Potassium79 claims
- Metformin Hcl78 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 71.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Penn State Health Medical Group LLCLancaster, PA
- Phoenix Rehabilitation And Health Services IncCranberry Twp, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gary Robert Clauss among 7,483 family medicine physician records in Pennsylvania
Gary Robert Clauss, 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 2019, is newer than 81% of them.
- NPI issued2019 · 81% of these records are older, 17% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2018 · median 2005 among the 4,529 with a school on file
- Record last updated2026 · 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).
213 family medicine physician records list a practice address in Lancaster
They are 213 of the 5,378 NPPES records with a practice address in Lancaster, and 7,483 family medicine physician records in Pennsylvania.
All 7,483 in Pennsylvania → Every provider in Lancaster → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- William Bakken, M.D.Lancaster, PA 176031447247135
- Anne-Marie Derrico, MDLancaster, PA 176031982658050
- William Fife, MDLancaster, PA 176031124070933
- Gary Gehman, M.D.Lancaster, PA 176031326035015
- Althea Keener, MDLancaster, PA 176031205872330
- David Ling, M.D.Lancaster, PA 176031982697272
- Nunzio Mastropietro, M.D.Lancaster, PA 176031326048794
- Thomas Mextorf, D.O.Lancaster, PA 176031194703629
Common questions
What is Gary Robert Clauss, DO's NPI number?
Gary Robert Clauss, DO's National Provider Identifier (NPI) is 1427613157, issued on May 8, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Gary Robert Clauss, DO located?
The NPPES record lists a practice address at 2221 Noll Dr, Lancaster, PA, 17603. Phone: (717) 327-4694. Providers update this record themselves, so call before visiting.
How can I verify Gary Robert Clauss, DO's license?
NPPES lists Pennsylvania license number HS000214L, 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 Robert Clauss, DO prescribe under Medicare Part D?
In 2024, Gary Robert Clauss, DO had 2,883 Medicare Part D claims for 506 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Gary Robert Clauss, DO's MIPS final score?
The 2023 MIPS final score is 71.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.