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WILLIAM L MORFELD M.D.
NPI 1306145107
Internal Medicine in Clayton, CA

Active since March 18, 2011PECOS Enrolled
5922 WALLACE DR, CLAYTON, CA 94517(925) 672-5123 Get Directions Write a Review

NPPES record last updated: March 18, 2011. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About William L Morfeld M.d. NPPES

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

WILLIAM L MORFELD M.D. (NPI 1306145107) is an individual internal medicine provider in Clayton, California, licensed in California (GFE8192) and active in the NPI registry since March 2011. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1306145107
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameWILLIAM L MORFELDCredential: M.D.
Location Address5922 WALLACE DRClayton, CA 94517-1143
Mailing Address5922 Wallace DrClayton, CA 94517-1143 · (925) 672-5123
Phone(925) 672-5123
Sole ProprietorYes
Enumeration DateMarch 18, 2011
✔ NPI 1306145107 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · GFE8192
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.
5922 WALLACE DR, Clayton, CA 94517
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William L Morfeld M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94517 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
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.

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 Morfeld's NPI number?

The NPI number for William Morfeld is 1306145107. It was assigned to this individual provider in the NPPES registry on March 18, 2011.

Where is William Morfeld located?

William Morfeld practices at 5922 Wallace Dr, Clayton, CA 94517. The listed phone number is (925) 672-5123.

What is William Morfeld's specialty?

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

Is William Morfeld enrolled in Medicare?

Yes. William Morfeld is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for William Morfeld was last updated on March 18, 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.