Nathan J. Hemerly, DO
Family Medicine Physician · Mechanicsburg, PA
Nathan J. Hemerly, DO is a family medicine physician with a practice address in Mechanicsburg, Pennsylvania, and NPI 1669792784, issued on Jun 11, 2010. Check the license (Pennsylvania OS015946, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Nathan J. Hemerly
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- OS015946 PA
Self-reported in NPPES; status is on the state search - Practice location
- 140 Old Willow Mill RD, Mechanicsburg, PA 17050
- Phone
- (717) 766-4635
- Enumerated
- Jun 11, 2010
- Record last updated
- Oct 16, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (717) 766-4818
- Medicaid ID
- 1033505330001 PA
- Medicare enrollment
- Enrolled (PECOS I20170927000852); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2010
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 7,483 in Pennsylvania → Look up another NPI →
Also registered at 140 Old Willow Mill RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ann Bogdan, MDFamily Medicine Physician1992762058
- Joshua Lebo, PA-CPhysician Assistant1215429295
- Mack Ruffin, MDFamily Medicine Physician1245329101
- Kristen SlinkardFamily Medicine Physician1578927406
Verify Nathan J. Hemerly in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS015946Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% more Medicare Part D claims than the average family medicine physician in 2024
4,254 Medicare Part D claims for 338 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 50 claims were for opioids.
Most prescribed
- Atorvastatin Calcium337 claims
- Amlodipine Besylate220 claims
- Omeprazole163 claims
- Levothyroxine Sodium162 claims
- Lisinopril129 claims
- Hydrochlorothiazide127 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): 71.8 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 one group practice
- The Milton S Hershey Medical Center Physicians GroupHershey, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathan J. Hemerly among 7,483 family medicine physician records in Pennsylvania
Nathan J. Hemerly, 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 2010, is newer than 60% of them.
- NPI issued2010 · 60% of these records are older, 38% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2010 · median 2005 among the 4,529 with a school on file
- 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).
49 family medicine physician records list a practice address in Mechanicsburg
They are 49 of the 1,659 NPPES records with a practice address in Mechanicsburg, and 7,483 family medicine physician records in Pennsylvania.
All 7,483 in Pennsylvania → Every provider in Mechanicsburg → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Vanitha Abraham, M.D.Mechanicsburg, PA 170501124011101
- Ann Bogdan, MDMechanicsburg, PA 170501992762058
- Vernne Greiner, DOMechanicsburg, PA 170501255398319
- Margaret Groff, M.D.Mechanicsburg, PA 170501073506945
- Richard Harker, MDMechanicsburg, PA 170501780670885
- Creston Herold, MDMechanicsburg, PA 170501184610289
- Charles Lowe, MDMechanicsburg, PA 170501841253119
- Valentine Osborn, DOMechanicsburg, PA 170501750348827
Common questions
What is Nathan J. Hemerly, DO's NPI number?
Nathan J. Hemerly, DO's National Provider Identifier (NPI) is 1669792784, issued on Jun 11, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Nathan J. Hemerly, DO located?
The NPPES record lists a practice address at 140 Old Willow Mill RD, Mechanicsburg, PA, 17050. Phone: (717) 766-4635. Providers update this record themselves, so call before visiting.
How can I verify Nathan J. Hemerly, DO's license?
NPPES lists Pennsylvania license number OS015946, 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 Nathan J. Hemerly, DO prescribe under Medicare Part D?
In 2024, Nathan J. Hemerly, DO had 4,254 Medicare Part D claims for 338 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Nathan J. Hemerly, DO's MIPS final score?
The 2023 MIPS final score is 71.8 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.