Abigail K. Classen, D.O.
Family Medicine Physician · East Norriton, PA
Abigail K. Classen, D.O. is a family medicine physician with a practice address in East Norriton, Pennsylvania, and NPI 1891082434, issued on Jul 4, 2011. Check the license (Pennsylvania OS016609, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Abigail K. Classen
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- OS016609 PA
OT014349 PA
Self-reported in NPPES; status is on the state search - Practice location
- 400 E Germantown Pike, East Norriton, PA 19401
- Phone
- (610) 994-0063
- Enumerated
- Jul 4, 2011
- Record last updated
- Mar 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20140912000983); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2011
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 7,483 in Pennsylvania → Look up another NPI →
Also registered at 400 E Germantown Pike
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Olga Apasava, PA-CPhysician Assistant1174900203
- Danielle Bell, PA-CMedical Physician Assistant1952615460
- Brian DuffellEmergency Medicine Physician1629426978
- Robert Fine, MDEmergency Medicine Physician1033153184
- Jillian Groman, PA-CPhysician Assistant1568918308
- Zahida Halimi, PA-CPhysician Assistant1437806858
Verify Abigail K. Classen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS016609Check 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 family medicine physician in 2024
138 Medicare Part D claims for 120 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Albuterol Sulfate Hfa16 claims
- Nitrofurantoin Mono-Macro12 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): 80.6 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
- Patient First Pennsylvania Medical Group PLLCEast Norriton, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Abigail K. Classen among 7,483 family medicine physician records in Pennsylvania
Abigail K. Classen, D.O. 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 2011, is newer than 62% of them.
- NPI issued2011 · 62% of these records are older, 36% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2011 · median 2005 among the 4,529 with a school on file
- Record last updated2021 · 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).
19 family medicine physician records list a practice address in East Norriton
They are 19 of the 347 NPPES records with a practice address in East Norriton, and 7,483 family medicine physician records in Pennsylvania.
All 7,483 in Pennsylvania → Every provider in East Norriton → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Joseph Calamia, DONorristown, PA 194011841279551
- Joseph Cipriano, MDNorristown, PA 194011326158312
- William Dickerman, D.O.East Norriton, PA 194011487668174
- Ann George, M.D.Norristown, PA 194011861688681
- Michael Kouyoumdjian, D.O.Norristown, PA 194011316938053
- Frank Liu, M.D.Norristown, PA 194011992843940
- Christopher Malsch, D.O.Norristown, PA 194011851356372
- Chandira Mendis, MDEast Norriton, PA 194011669425591
Common questions
What is Abigail K. Classen, D.O.'s NPI number?
Abigail K. Classen, D.O.'s National Provider Identifier (NPI) is 1891082434, issued on Jul 4, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Abigail K. Classen, D.O. located?
The NPPES record lists a practice address at 400 E Germantown Pike, East Norriton, PA, 19401. Phone: (610) 994-0063. Providers update this record themselves, so call before visiting.
How can I verify Abigail K. Classen, D.O.'s license?
NPPES lists Pennsylvania license number OS016609, 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 Abigail K. Classen, D.O. prescribe under Medicare Part D?
In 2024, Abigail K. Classen, D.O. had 138 Medicare Part D claims for 120 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Abigail K. Classen, D.O.'s MIPS final score?
The 2023 MIPS final score is 80.6 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.