William R. Friedenberg, MD
Hematology & Oncology Physician · Sayre, PA
William R. Friedenberg, MD is a hematology & oncology physician with a practice address in Sayre, Pennsylvania, and NPI 1841266491, issued on Feb 24, 2006. Check the license (Pennsylvania MD065579L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- William R. Friedenberg
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- MD065579L PA
211946-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1 Guthrie SQ, Sayre, PA 18840
- Phone
- (570) 888-5858
- Enumerated
- Feb 24, 2006
- Record last updated
- May 29, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (570) 882-3007
- Medicaid ID
- 01860975 NY
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 784 in Pennsylvania → Look up another NPI →
Also registered at 1 Guthrie SQ
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William R. Friedenberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD065579LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
25 Medicare Part D claims, against an average of 877 among the 10,784 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.
William R. Friedenberg among 784 hematology & oncology physician records in Pennsylvania
William R. Friedenberg, MD is one of 784 hematology & oncology physician records with a practice address in Pennsylvania. 83% 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 13% of them.
- NPI issued2006 · 13% of these records are older, 55% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 71% of these records are
- Record last updated2009 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Pennsylvania
There are 784 hematology & oncology physician records in Pennsylvania.
All 784 in Pennsylvania → Every provider in Sayre → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Patrick Bergevin, MDSayre, PA 188401831162361
- Joyson Poulose, M.DSayre, PA 188401134561632
- Debasmita Saha, MDQuakertown, PA 189511528359387
- Mitchell Alden, D.O.Sellersville, PA 189601861474991
- Sarah Goodyear, MDSellersville, PA 189601891728622
- Alan Kaufman, M.D.Sellersville, PA 189601861474637
- Anthony Magdalinski, DOSellersville, PA 189601528067352
- Thomas Peacock, MDSellersville, PA 189601528063195
Common questions
What is William R. Friedenberg, MD's NPI number?
William R. Friedenberg, MD's National Provider Identifier (NPI) is 1841266491, issued on Feb 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William R. Friedenberg, MD located?
The NPPES record lists a practice address at 1 Guthrie SQ, Sayre, PA, 18840. Phone: (570) 888-5858. Providers update this record themselves, so call before visiting.
How can I verify William R. Friedenberg, MD's license?
NPPES lists Pennsylvania license number MD065579L, 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 William R. Friedenberg, MD prescribe under Medicare Part D?
In 2024, William R. Friedenberg, MD had 25 Medicare Part D claims; the average among hematology & oncology physician prescribers was 877. 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.