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FREDERICK WILLIAM PENCZAK MD
NPI 1841379070
Surgery in San Rafael, CA

Active since November 06, 2006PECOS EnrolledAccepts Medicare Assignment
78 CREEKSIDE DR, SAN RAFAEL, CA 94903(707) 939-7411(707) 939-1617 Get Directions Write a Review

NPPES record last updated: April 25, 2014. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Frederick William Penczak Md NPPES

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

FREDERICK WILLIAM PENCZAK MD (NPI 1841379070) is an individual surgery provider in San Rafael, California, licensed in California (00A685120) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and is a graduate of Medical College Of Pennsylvania (1999).

NPPES Registry Identity

NPI1841379070
Entity TypeIndividualMale
Primary Taxonomy208600000X
Provider Legal NameFREDERICK WILLIAM PENCZAKCredential: MD
Location Address78 CREEKSIDE DRSan Rafael, CA 94903-1055
Mailing AddressPo Box 1964Sonoma, CA 95476-1964 · (707) 939-7411 · Fax (707) 939-1617
Phone(707) 939-7411
Fax(707) 939-1617
Sole ProprietorNo
Medical School CMSMedical College Of PennsylvaniaGraduated 1999
Enumeration DateNovember 6, 2006
Last NPPES UpdateApril 25, 2014
✔ NPI 1841379070 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in CA · 00A685120
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
78 CREEKSIDE DR, San Rafael, CA 94903
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Other Identifiers 3

Medicare ID-Type Unspecified00A685120CA
Medicaid00A685120CA
Medicare UPINH04454

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

Frederick William Penczak Md 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 ID9830185339
PECOS Enrollment IDI20040421000882
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 4

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.

Replacement of thigh bone and hip joint with prosthesis 27130
This procedure, known as hip arthroplasty, involves replacing your damaged thigh bone and hip joint with artificial parts, called a prosthesis. It helps relieve pain, improve mobility, and enhance your quality of life.
128 services124 patients
Replacement of knee joint, both sides of knee 27447
A bilateral knee joint replacement is a procedure where the damaged parts of both your knee joints are replaced with artificial parts. It aims to relieve pain and improve mobility. The process involves a surgical operation under anesthesia.
99 services99 patients
Treatment of upper end of broken thigh bone with placement of stabilizing device or prosthetic replacement 27236
This procedure involves treating a fracture at the top of your thigh bone. A stabilizing device or prosthetic replacement is placed to aid in healing. This helps restore mobility and function while reducing pain. The treatment aims for a quick and safe recovery.
30 services30 patients
Treatment of broken neck of thigh bone with bone implant 27245
This procedure involves repairing a fractured thigh bone by inserting a bone implant. The implant helps stabilize the bone, allowing it to heal correctly. It's performed under anesthesia and requires a hospital stay for recovery.
18 services18 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94903 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
$104.67 typical visit price
range $69.07 – $202.63
Typical copayment $26.16 (range $17.26 – $50.65)
Most-billed visit code 99203
Established Patient
$85.00 typical visit price
range $23.44 – $166.64
Typical copayment $21.25 (range $5.86 – $41.66)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Frederick Penczak's NPI number?

The NPI number for Frederick Penczak is 1841379070. It was assigned to this individual provider in the NPPES registry on November 6, 2006.

Where is Frederick Penczak located?

Frederick Penczak practices at 78 Creekside Dr, San Rafael, CA 94903. The listed phone number is (707) 939-7411.

What is Frederick Penczak's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Frederick Penczak enrolled in Medicare?

Yes. Frederick Penczak 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.

When was this NPI record last updated?

The NPPES record for Frederick Penczak was last updated on April 25, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.