William Freiberg
Neurology Physician · Pittsburgh, PA
William Freiberg is a neurology physician with a practice address in Pittsburgh, Pennsylvania, and NPI 1154579100, issued on Sep 3, 2008. Check the license (Pennsylvania OS016154, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- William Freiberg
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- OS016154 PA
Self-reported in NPPES; status is on the state search - Practice location
- 4815 Liberty Ave Ste 439, Pittsburgh, PA 15224
- Phone
- (412) 578-3925
- Enumerated
- Sep 3, 2008
- Record last updated
- May 24, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20191227000140); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2008
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 1,077 in Pennsylvania → Look up another NPI →
Also registered at 4815 Liberty Ave Ste 439
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jonathan Altland, PA-CPhysician Assistant1043207400
- Shahin Ayazi, MDSurgery Physician1891056560
- Olivia Bannon, CRNPFamily Nurse Practitioner1538035738
- Lubomyr Boris, D.O.Surgery Physician1205368115
- John Burkett, M.D.Neurology Physician1205255809
- Christine CernigliaGerontology Nurse Practitioner1811524564
Verify William Freiberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS016154Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average neurology physician in 2024
13 Medicare Part D claims, against an average of 1,370 among the 15,005 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.
The MIPS final score for 2023 (Medicare payment program): 93.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Allegheny ClinicWexford, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Freiberg among 1,077 neurology physician records in Pennsylvania
William Freiberg is one of 1,077 neurology 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 2008, is newer than 45% of them.
- NPI issued2008 · 45% of these records are older, 50% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2008 · median 2007 among the 727 with a school on file
- Record last updated2021 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Pennsylvania
There are 1,077 neurology physician records in Pennsylvania.
All 1,077 in Pennsylvania → Every provider in Pittsburgh → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Robert Baraff, MDPittsburgh, PA 152241417921719
- John Burkett, M.D.Pittsburgh, PA 152241205255809
- Dolores Dominguez Santamaria, MDPittsburgh, PA 152241982897864
- Barbara McManus, M.D.Pittsburgh, PA 152241124310701
- Barbara O'Connell, MDPittsburgh, PA 152241386638120
- Jimmy Ong, MDPittsburgh, PA 152241366428377
- Meghan Piccinin, DOPittsburgh, PA 152241558822494
- Andrea Synowiec, DOPittsburgh, PA 152241447561568
Common questions
What is William Freiberg's NPI number?
William Freiberg's National Provider Identifier (NPI) is 1154579100, issued on Sep 3, 2008. An NPI identifies a provider in billing; it is not a license.
Where is William Freiberg located?
The NPPES record lists a practice address at 4815 Liberty Ave Ste 439, Pittsburgh, PA, 15224. Phone: (412) 578-3925. Providers update this record themselves, so call before visiting.
How can I verify William Freiberg's license?
NPPES lists Pennsylvania license number OS016154, 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 Freiberg prescribe under Medicare Part D?
In 2024, William Freiberg had 13 Medicare Part D claims; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
What is William Freiberg's MIPS final score?
The 2023 MIPS final score is 93.8 of 100. 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.