DR. JOHANNA MARIE WOLGAST M.D.
NPI 1558467522
Family Medicine in San Mateo, CA
About Dr. Johanna Marie Wolgast M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHANNA MARIE WOLGAST M.D. (NPI 1558467522) is an individual family medicine provider in San Mateo, California, licensed in California (A71643) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS, maintains a secondary practice location in Half Moon Bay, and is a graduate of University Of California, San Diego School Of Medicine (1995).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Dr. Johanna Marie Wolgast 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.
Medicare Billing Reassignments
3Medicare enrollment records show Johanna Wolgast reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Mateo, CA 94403
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: County Of San Mateo
- Also billed through NPI 1780753434 (California), NPI 1831268580 (California)
- 597 clinicians in this Medicare group
Palo Alto, CA 94301
- Reassigned Medicare billing, California enrollment
- 4,479 clinicians in this Medicare group
San Francisco, CA 94110
- Reassigned Medicare billing, California enrollment
- 842 clinicians in this Medicare group
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 10
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94401 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
SAN MATEO, CA 94401
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 Johanna Wolgast's NPI number?
The NPI number for Johanna Wolgast is 1558467522. It was assigned to this individual provider in the NPPES registry on September 16, 2006.
Where is Johanna Wolgast located?
Johanna Wolgast practices at 100 S San Mateo Dr, San Mateo, CA 94401. The listed phone number is (650) 696-4427.
What is Johanna Wolgast's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Johanna Wolgast enrolled in Medicare?
Yes. Johanna Wolgast 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 Johanna Wolgast's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Johanna Wolgast reassigns Medicare benefits to 3 organizations: San Mateo County (San Mateo, CA), Sutter Bay Medical Foundation (Palo Alto, CA) and University Of California Sfgh Medical Group (San Francisco, CA). 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 Johanna Wolgast's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Johanna Wolgast was last updated on June 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Dr. Johanna Marie Wolgast, M.D. · NPI 1558467522
Family Medicine physician in San Mateo, California. Individual provider, active in the CMS NPPES registry since September 16, 2006.
## Identity
- **NPI:** 1558467522 (Entity type: Individual)
- **Enumerated:** September 16, 2006
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** A71643 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 S SAN MATEO DR, San Mateo, CA 94401-3805
- **Phone:** (650) 696-4427
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): San Mateo County (NPI 1710908272, San Mateo, CA); Sutter Bay Medical Foundation (NPI 1013950807, Palo Alto, CA); University Of California Sfgh Medical Group (NPI 1174598296, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Diego School Of Medicine, class of 1995
## Record status
- **NPPES last updated:** June 22, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1558467522) · Data from the CMS NPPES public registry.