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WILLIAM FREIBERG
NPI 1154579100
Psychiatry & Neurology - Neurology in Pittsburgh, PA

Active since September 03, 2008PECOS EnrolledAccepts Medicare Assignment
95.1/100
CMS Quality Rating
4815 LIBERTY AVE STE 439, PITTSBURGH, PA 15224(412) 578-3925 Get Directions Write a Review

NPPES record last updated: May 24, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 24, 2021, Sep 30, 2020, Dec 4, 2019 and 2 more (5 updates tracked since 2015).

About William Freiberg NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM FREIBERG (NPI 1154579100) is an individual neurology provider in Pittsburgh, Pennsylvania, licensed in Pennsylvania (OS016154) and active in the NPI registry since September 2008. He is enrolled in Medicare PECOS, is affiliated with West Penn Hospital, and is a graduate of Philadelphia College Of Osteopathic Medicine (2008).

NPPES Registry Identity

NPI1154579100
Entity TypeIndividualMale
Primary Taxonomy2084N0400X
Provider Legal NameWILLIAM FREIBERG
Location Address4815 LIBERTY AVE STE 439Pittsburgh, PA 15224-2156
Mailing Address4815 Liberty Ave Ste 439Pittsburgh, PA 15224-2156
Phone(412) 578-3925
Sole ProprietorNo
Medical School CMSPhiladelphia College Of Osteopathic MedicineGraduated 2008
Enumeration DateSeptember 3, 2008
Last NPPES UpdateMay 24, 20215 updates tracked since enumeration
NPPES CertifiedSeptember 30, 2020
✔ NPI 1154579100 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
License✔ Licensed in PA · OS016154
Definition
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
4815 LIBERTY AVE STE 439, Pittsburgh, PA 15224
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource, Taro Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

William Freiberg is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8325281553
PECOS Enrollment IDI20191227000140
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show William Freiberg reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Allegheny Clinic
Same address
Surgery
4815 LIBERTY AVE STE 215
Pittsburgh, PA 15224
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 2,881 clinicians in this Medicare group
NPI 1013240860 (412) 235-5900
Upmc Altoona Regional Health Services, Inc
81 mi
Internal Medicine
1414 9TH AVE, STATION MEDICAL CENTER
Altoona, PA 16602
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 338 clinicians in this Medicare group
NPI 1639158488 (814) 946-1655
Central Maine Medical Center
558 mi
General Acute Care Hospital
300 MAIN ST
Lewiston, ME 04240
  • Reassigned Medicare billing, Maine enrollment
  • 920 clinicians in this Medicare group
NPI 1689653487 (207) 795-5646

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
124 services120 patients
Measurement of brain wave activity (eeg), awake and drowsy 95816
Measurement of brain wave activity, also known as an EEG, is a non-invasive test that records electrical patterns in your brain. This procedure is done when you're awake and drowsy to understand how your brain functions during different states of consciousness.
40 services39 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
34 services34 patients
Measurement of brain wave activity (eeg), awake and asleep 95819
The measurement of brain wave activity, known as an EEG, records the brain's electrical signals. It's performed when you're awake and asleep to monitor your brain's functioning. It helps in diagnosing conditions like epilepsy, sleep disorders, and other neurological issues.
32 services32 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
19 services12 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
17 services11 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

West Penn Hospital

Acute Care Hospitals · Pittsburgh, PA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390090
Location4800 Friendship AvenuePittsburgh, PA 15224 · Allegheny County
Emergency services Birthing friendly

Ahn Wexford Hospital

Acute Care Hospitals · Wexford, PA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390334
Location12351 Perry HighwayWexford, PA 15090 · Allegheny County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 15224 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$126.34 typical visit price
range $54.64 – $166.87
Typical copayment $31.58 (range $13.66 – $41.71)
Most-billed visit code 99204
Established Patient
$96.82 typical visit price
range $17.33 – $135.84
Typical copayment $24.20 (range $4.33 – $33.96)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

95.1/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality86.8
Promoting Interoperability99
Improvement Activities40

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JONATHAN D ALTLAND PA-C
Physician Assistant
4815 LIBERTY AVE STE 439
PITTSBURGH, PA 15224
Allegheny County (412) 578-3925
WYATT RODAN MD
Surgery
4815 LIBERTY AVE STE 439
PITTSBURGH, PA 15224
Allegheny County (412) 359-4373
LEAH JEWELL
Speech-Language Pathologist
4815 LIBERTY AVE STE 439, SUITE 211
PITTSBURGH, PA 15224
Allegheny County (724) 260-7300
PATRICIA L HABDAS CRNP
Nurse Practitioner (Family)
4815 LIBERTY AVE STE 439
PITTSBURGH, PA 15224
Allegheny County (412) 578-3925
ERIC WEISMAN MD
Psychiatry & Neurology (Neurology)
4815 LIBERTY AVE STE 439
PITTSBURGH, PA 15224
Allegheny County (412) 578-3925
BARBARA MARIE MCMANUS M.D.
Psychiatry & Neurology (Neurology)
4815 LIBERTY AVE STE 439
PITTSBURGH, PA 15224
Allegheny County (412) 578-3925
MARGARET ELIZABETH GARDNER PA-C
Physician Assistant (Surgical)
4815 LIBERTY AVE STE 439
PITTSBURGH, PA 15224
Allegheny County (724) 260-7300
DR. JOHN GLENN BURKETT M.D.
Psychiatry & Neurology (Neurology)
4815 LIBERTY AVE STE 439
PITTSBURGH, PA 15224
Allegheny County (412) 578-3925

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Freiberg's NPI number?

The NPI number for William Freiberg is 1154579100. It was assigned to this individual provider in the NPPES registry on September 3, 2008.

Where is William Freiberg located?

William Freiberg practices at 4815 Liberty Ave Ste 439, Pittsburgh, PA 15224. The listed phone number is (412) 578-3925.

What is William Freiberg's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is William Freiberg enrolled in Medicare?

Yes. William Freiberg is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for William Freiberg's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Freiberg reassigns Medicare benefits to 3 organizations: Allegheny Clinic (Pittsburgh, PA), Upmc Altoona Regional Health Services, Inc (Altoona, PA) and Central Maine Medical Center (Lewiston, ME). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Freiberg's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Freiberg accept?

Health plans from CareSource and Taro Health list William Freiberg as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is William Freiberg affiliated with any hospitals?

According to CMS data, William Freiberg is affiliated with West Penn Hospital and Ahn Wexford Hospital.

When was this NPI record last updated?

The NPPES record for William Freiberg was last updated on May 24, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.