Earle Smith Williamson, D.O.
Family Medicine Physician · Reading, PA
Earle Smith Williamson, D.O. is a family medicine physician with a practice address in Reading, Pennsylvania, and NPI 1992188387, issued on Jul 2, 2015. Check the license (Pennsylvania OS019450, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Earle Smith Williamson
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- OS019450 PA
Self-reported in NPPES; status is on the state search - Practice location
- 3970 Perkiomen Ave, Reading, PA 19606
- Phone
- (610) 779-1330
- Enumerated
- Jul 2, 2015
- Record last updated
- Sep 11, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (610) 779-7699
- Medicare enrollment
- Enrolled (PECOS I20180927002200); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2015
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 7,483 in Pennsylvania → Look up another NPI →
Also registered at 3970 Perkiomen Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lindsey EvansFamily Nurse Practitioner1326732041
- Hannah Grillo, PA-SFamily Medicine Physician1063259653
- Mikalee Kerr, PA-CPhysician Assistant1598635385
- Rebecca Neri, CRNPFamily Nurse Practitioner1205363306
- Beverly Niehls, MDFamily Medicine Physician1215934666
- Robin Savar, D.O.Family Medicine Physician1013915990
Verify Earle Smith Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS019450Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average family medicine physician in 2024
8,962 Medicare Part D claims for 789 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 237 claims were for opioids.
Most prescribed
- Atorvastatin Calcium439 claims
- Levothyroxine Sodium437 claims
- Amlodipine Besylate345 claims
- Lisinopril327 claims
- Losartan Potassium233 claims
- Pantoprazole Sodium220 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): 71.5 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
- Phoenix Rehabilitation And Health Services IncCranberry Twp, PA
- St Joseph Medical GroupReading, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Earle Smith Williamson among 7,483 family medicine physician records in Pennsylvania
Earle Smith Williamson, 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 2015, is newer than 71% of them.
- NPI issued2015 · 71% of these records are older, 27% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2015 · median 2005 among the 4,529 with a school on file
- Record last updated2018 · 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).
83 family medicine physician records list a practice address in Reading
They are 83 of the 1,822 NPPES records with a practice address in Reading, and 7,483 family medicine physician records in Pennsylvania.
All 7,483 in Pennsylvania → Every provider in Reading → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Alan Chelius, M. D.Reading, PA 196061235232299
- Jonathan Dreazen, M.D.Reading, PA 196061760452320
- Elizabeth Edmunds, M.D.Reading, PA 196061144270844
- Charles Givens, M.D,Reading, PA 196061336140599
- Hannah Grillo, PA-SReading, PA 196061063259653
- Eric Newman, DOReading, PA 196061639160328
- Duy NguyenReading, PA 196061770105785
- Beverly Niehls, MDReading, PA 196061215934666
Common questions
What is Earle Smith Williamson, D.O.'s NPI number?
Earle Smith Williamson, D.O.'s National Provider Identifier (NPI) is 1992188387, issued on Jul 2, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Earle Smith Williamson, D.O. located?
The NPPES record lists a practice address at 3970 Perkiomen Ave, Reading, PA, 19606. Phone: (610) 779-1330. Providers update this record themselves, so call before visiting.
How can I verify Earle Smith Williamson, D.O.'s license?
NPPES lists Pennsylvania license number OS019450, 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 Earle Smith Williamson, D.O. prescribe under Medicare Part D?
In 2024, Earle Smith Williamson, D.O. had 8,962 Medicare Part D claims for 789 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Earle Smith Williamson, D.O.'s MIPS final score?
The 2023 MIPS final score is 71.5 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.