1. Home
  2. Directory
  3. Pennsylvania
  4. Pittsburgh
  5. Internal Medicine
  6. NPI Profile

WILLIAM S. ZILLWEGER M.D.
NPI 1285607002
Internal Medicine in Pittsburgh, PA

Active since February 10, 2006PECOS EnrolledAccepts Medicare Assignment
9104 BABCOCK BLVD, SUITE 3111, PITTSBURGH, PA 15237(412) 366-2950(412) 366-2775 Get Directions Write a Review

NPPES record last updated: January 12, 2011. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About William S. Zillweger M.d. NPPES

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

WILLIAM S. ZILLWEGER M.D. (NPI 1285607002) is an individual internal medicine provider in Pittsburgh, Pennsylvania, licensed in Pennsylvania (054995L) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, is affiliated with Upmc Passavant, and is a graduate of Other (1982).

NPPES Registry Identity

NPI1285607002
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameWILLIAM S. ZILLWEGERCredential: M.D.
Location Address9104 BABCOCK BLVD, SUITE 3111Pittsburgh, PA 15237-5818
Mailing Address9104 Babcock Blvd, Suite 3111Pittsburgh, PA 15237-5818 · (412) 366-2950 · Fax (412) 366-2775
Phone(412) 366-2950
Fax(412) 366-2775
Sole ProprietorYes
Medical School CMSOtherGraduated 1982
Enumeration DateFebruary 10, 2006
Last NPPES UpdateJanuary 12, 2011
✔ NPI 1285607002 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in PA · 054995L
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
9104 BABCOCK BLVD, Pittsburgh, PA 15237
Open in Google Maps ↗

Other Identifiers 1

Medicare UPING00944PA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

William S. Zillweger M.d. 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 ID4183787161
PECOS Enrollment IDI20100928001484
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.

Areas of Expertise CMS Part B claims 7

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.

Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes 99310
A follow-up nursing facility visit is a routine check-up that typically lasts about 35 minutes. During this visit, your health status is evaluated, any changes in your condition are noted, and necessary adjustments to your care plan are made. It's an essential part of maintaining your health.
77 services41 patients
Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more 99306
An initial nursing facility visit is your first meeting with your healthcare team at a nursing facility. Lasting typically 45 minutes, this appointment involves a comprehensive health assessment and the creation of your personalized care plan. It's a crucial step to ensure your health and well-being.
57 services52 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
56 services25 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
45 services22 patients
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
43 services27 patients
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
38 services23 patients

Hospital Affiliations CMS Care Compare 2

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

Upmc Passavant

Acute Care Hospitals · Pittsburgh, PA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390107
Location9100 Babcock BoulevardPittsburgh, PA 15237 · Allegheny County
Emergency services

Butler Memorial Hospital

Acute Care Hospitals · Butler, PA
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390168
LocationOne Hospital WayButler, PA 16001 · Butler County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 15237 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.

Referred Medical Equipment & Supplies CMS DME claims 5

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
3 suppliers11 claims11 services$22.84 avg. paid by Medicare
Filter, disposable, used with positive airway pressure device A7038
DME-Other DME · category DE001N
3 suppliers11 claims66 services$1.08 avg. paid by Medicare
Transport chair, adult size, patient weight capacity up to and including 300 pounds E1038
DME-Other DME · category DE000N
1 supplier11 claims11 services$9.99 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
3 suppliers13 claims13 services$57.37 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
1 supplier11 claims11 services$215.80 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

GABRIELLE ANNE BUI MD
Student in an Organized Health Care Education/Training Program
9104 BABCOCK BLVD, 5TH FLOOR
PITTSBURGH, PA 15237
Allegheny County (412) 748-7407
NATALIE LLEWELLYN
Physician Assistant (Surgical)
9104 BABCOCK BLVD, SUITE 2120
PITTSBURGH, PA 15237
Allegheny County (412) 367-0600
VASANTI HARSHIT MAJMUDAR M.D.
Obstetrics & Gynecology
9104 BABCOCK BLVD, SUITE 5113
PITTSBURGH, PA 15237
Allegheny County (412) 364-4184
JAMES CRAIG
Physical Medicine & Rehabilitation (Pain Medicine)
9104 BABCOCK BLVD, SUITE 2120
PITTSBURGH, PA 15237
Allegheny County (412) 367-0600
DR. RICHARD AVERY HERMAN JR. MD
Student in an Organized Health Care Education/Training Program
9104 BABCOCK BLVD, 5TH FLOOR
PITTSBURGH, PA 15237
Allegheny County (706) 721-0211
ROMANO PONTZER & ASSOCIATES LIMITED
Internal Medicine (Infectious Disease)
9104 BABCOCK BLVD, STE 6118
PITTSBURGH, PA 15237
Allegheny County (412) 348-0330
JUDITH ESMAN
Internal Medicine
9104 BABCOCK BLVD, SUITE 2120
PITTSBURGH, PA 15237
Allegheny County (412) 367-0600
DR. MICHAEL W. WEISS M.D.
Specialist
9104 BABCOCK BLVD, SUITE 2120
PITTSBURGH, PA 15237
Allegheny County (412) 367-0600

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 Zillweger's NPI number?

The NPI number for William Zillweger is 1285607002. It was assigned to this individual provider in the NPPES registry on February 10, 2006.

Where is William Zillweger located?

William Zillweger practices at 9104 Babcock Blvd Suite 3111, Pittsburgh, PA 15237. The listed phone number is (412) 366-2950.

What is William Zillweger's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is William Zillweger enrolled in Medicare?

Yes. William Zillweger 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.

Is William Zillweger affiliated with any hospitals?

According to CMS data, William Zillweger is affiliated with Upmc Passavant and Butler Memorial Hospital.

When was this NPI record last updated?

The NPPES record for William Zillweger was last updated on January 12, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.