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DR. CHARLES A MOSER PH.D., M.D.
NPI 1083615983
Internal Medicine in San Francisco, CA

Active since August 02, 2005Opted out of Medicare · through May 11, 2027
45 CASTRO ST, SAN FRANCISCO, CA 94114(415) 600-4900(415) 369-1365 Get Directions Write a Review

NPPES record last updated: August 28, 2020. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Aug 28, 2020, Sep 20, 2019, Feb 9, 2016 (3 updates tracked since 2016).

About Dr. Charles A Moser Ph.d., M.d. NPPES

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

DR. CHARLES A MOSER PH.D., M.D. (NPI 1083615983) is an individual internal medicine provider in San Francisco, California, licensed in California (G75487) and active in the NPI registry since August 2005. He has opted out of Medicare through May 11, 2027 and remains eligible to order and refer and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1083615983
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. CHARLES A MOSERCredential: PH.D., M.D.
Location Address45 CASTRO STSan Francisco, CA 94114-1010
Mailing Address325 Distel CirLos Altos, CA 94022-1408 · (415) 600-4900 · Fax (415) 369-1365
Phone(415) 600-4900
Fax(415) 369-1365
Sole ProprietorYes
Enumeration DateAugust 2, 2005
Last NPPES UpdateAugust 28, 20203 updates tracked since enumeration
NPPES CertifiedAugust 28, 2020
✔ NPI 1083615983 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 · G75487
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.
45 CASTRO ST, San Francisco, CA 94114
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Secondary Practice Locations 2

Location 1899 Valencia StSan Francisco, CA 94110-1736 · Phone (415) 600-6960 · Fax (415) 369-1244
Location 21199 Bush St Ste 400San Francisco, CA 94109-5975 · Phone (415) 921-8210 · Fax (415) 921-0387

Other Identifiers 4

Medicaid00G754870CA
Other00G754870CA · Blue Shield
Other001CA04167CA · Tricare
Other110129325CA · Railroad Medicare

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Charles A Moser Ph.d., M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from May 11, 2025 through May 11, 2027.

Opt-Out Effective DateMay 11, 2025
Opt-Out In Effect ThroughMay 11, 2027Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Areas of Expertise CMS Part B claims

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.

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.
25 services24 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94114 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.

Referred Medical Equipment & Supplies CMS DME claims

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
6 suppliers12 claims30 services$6.15 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.

JENNIFER ALICIA THALER MS CCC- SLP
Speech-Language Pathologist
45 CASTRO ST
SAN FRANCISCO, CA 94114
San Francisco County (415) 600-6000
ALYSSA CLAIRE GHIRINGHELLI MSW
Social Worker
45 CASTRO ST
SAN FRANCISCO, CA 94114
San Francisco County (415) 600-5555
DR. BRIAN MICHAEL PARRETT M.D.
Plastic Surgery
45 CASTRO ST
SAN FRANCISCO, CA 94114
San Francisco County (415) 565-6888
SEMI HAN MD
Internal Medicine
45 CASTRO ST
SAN FRANCISCO, CA 94114
San Francisco County (415) 600-6000
MR. CARL STEIN MHS, PA-C
Physician Assistant (Medical)
45 CASTRO ST, SUITE 402
SAN FRANCISCO, CA 94114
San Francisco County (415) 861-2400
MS. TIFFANY TANG MBA, OTR, CHT, CEAS
Occupational Therapist
45 CASTRO ST, SOUTH TOWER LEVEL A, OUTPATIENT REHAB
SAN FRANCISCO, CA 94114
San Francisco County (415) 600-5855
CANDICE AUSTIN DENBY PA
Physician Assistant (Surgical)
45 CASTRO ST, SUITE 410
SAN FRANCISCO, CA 94114
San Francisco County (415) 565-6884
DR. WILLIAM J. KAPLA MD
Family Medicine (Adult Medicine)
45 CASTRO ST, SUITE #432
SAN FRANCISCO, CA 94114
San Francisco County (415) 865-3737

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 Charles Moser's NPI number?

The NPI number for Charles Moser is 1083615983. It was assigned to this individual provider in the NPPES registry on August 2, 2005.

Where is Charles Moser located?

Charles Moser practices at 45 Castro St, San Francisco, CA 94114. The listed phone number is (415) 600-4900.

What is Charles Moser's specialty?

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

Is Charles Moser enrolled in Medicare?

No. Charles Moser has opted out of Medicare through May 11, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Charles Moser was last updated on August 28, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.