1. Home
  2. Directory
  3. California
  4. San Francisco
  5. Internal Medicine
  6. NPI Profile

KRISTEN ELIZABETH MENGWASSER
NPI 1841828720
Internal Medicine - Rheumatology in San Francisco, CA

Active since March 27, 2020PECOS EnrolledAccepts Medicare Assignment
1001 POTRERO AVENUE BLDG 90 FL2, SAN FRANCISCO, CA 94110(628) 206-4777(628) 206-4257 Get Directions Write a Review

NPPES record last updated: April 7, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Apr 7, 2026, Jul 1, 2025, Jul 19, 2024 and 1 more (4 updates tracked since 2020).

About Kristen Elizabeth Mengwasser NPPES

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

KRISTEN ELIZABETH MENGWASSER (NPI 1841828720) is an individual rheumatology provider in San Francisco, California, licensed in California (A180354) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS and is a graduate of Harvard Medical School (2020).

NPPES Registry Identity

NPI1841828720
Entity TypeIndividualFemale
Primary Taxonomy207RR0500X
Provider Legal NameKRISTEN ELIZABETH MENGWASSER
Location Address1001 POTRERO AVENUE BLDG 90 FL2San Francisco, CA 94110
Mailing AddressPo Box 743749Los Angeles, CA 90074-3749 · (415) 514-3000 · Fax (415) 502-8175
Phone(628) 206-4777
Fax(628) 206-4257
Sole ProprietorYes
Medical School CMSHarvard Medical SchoolGraduated 2020
Enumeration DateMarch 27, 2020
Last NPPES UpdateApril 7, 20264 updates tracked since enumeration
NPPES CertifiedApril 7, 2026
✔ NPI 1841828720 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License✔ Licensed in CA · A180354
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
Also ListedInternal MedicineTaxonomy 207R00000X · License A180354 (CA)
1001 POTRERO AVENUE BLDG 90 FL2, San Francisco, CA 94110
Open in Google Maps ↗

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

Kristen Elizabeth Mengwasser 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 ID5698150019
PECOS Enrollment IDI20240715002711
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 94110 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 Kristen Mengwasser's NPI number?

The NPI number for Kristen Mengwasser is 1841828720. It was assigned to this individual provider in the NPPES registry on March 27, 2020.

Where is Kristen Mengwasser located?

Kristen Mengwasser practices at 1001 Potrero Avenue Bldg 90 Fl2, San Francisco, CA 94110. The listed phone number is (628) 206-4777.

What is Kristen Mengwasser's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Kristen Mengwasser enrolled in Medicare?

Yes. Kristen Mengwasser 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 Kristen Mengwasser was last updated on April 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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.