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SHAN WEN M.D.
NPI 1194056465
Hospitalist in San Francisco, CA

Active since January 26, 2010PECOS EnrolledAccepts Medicare Assignment
450 STANYAN ST, ROOM T4-33, SAN FRANCISCO, CA 94117(415) 750-4994(415) 750-8156 Get Directions Write a Review

NPPES record last updated: February 24, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Feb 24, 2022, Oct 15, 2018 (2 updates tracked since 2018).

About Shan Wen M.d. NPPES

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

SHAN WEN M.D. (NPI 1194056465) is an individual hospitalist provider in San Francisco, California, licensed in California (A110767) and active in the NPI registry since January 2010. He is enrolled in Medicare PECOS and is a graduate of Other (1983).

NPPES Registry Identity

NPI1194056465
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameSHAN WENCredential: M.D.
Location Address450 STANYAN ST, ROOM T4-33San Francisco, CA 94117-1019
Mailing Address450 Stanyan St, Room T4-33San Francisco, CA 94117-1019 · (415) 750-4994 · Fax (415) 750-8156
Phone(415) 750-4994
Fax(415) 750-8156
Sole ProprietorNo
Medical School CMSOtherGraduated 1983
Enumeration DateJanuary 26, 2010
Last NPPES UpdateFebruary 24, 20222 updates tracked since enumeration
NPPES CertifiedFebruary 24, 2022
✔ NPI 1194056465 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in CA · A110767
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Also ListedInternal MedicineTaxonomy 207R00000X · License A110767 (CA)
450 STANYAN ST, San Francisco, CA 94117
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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

Shan Wen 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.

PECOS PAC ID8921124231
PECOS Enrollment IDI20100923001268
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.

Medicare Billing Reassignments

5

Medicare enrollment records show Shan Wen reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Galen Inpatient Physicians Inc
Same address
Internal Medicine
450 STANYAN ST
San Francisco, CA 94117
  • Reassigned Medicare billing, California enrollment
  • 962 clinicians in this Medicare group
NPI 1215391594 (415) 668-1000
Ucsf Medical Group Business Services
0.7 mi
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94122
  • Reassigned Medicare billing, California enrollment
  • 5,544 clinicians in this Medicare group
NPI 1477624104 (415) 353-2808
University Of California San Francisco
0.7 mi
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
NPI 1164512851 (415) 476-1000
Regents Of The University Of California
0.8 mi
Endocrinology, Diabetes & Metabolism
505 PARNASSUS AVE
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 2,112 clinicians in this Medicare group
NPI 1376613943 (415) 353-2350
San Mateo County
5.8 mi
Community/Behavioral Health
375 89TH ST
Daly City, CA 94015
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: County Of San Mateo
  • Also billed through NPI 1831268580 (California)
  • 597 clinicians in this Medicare group
NPI 1053367854 (650) 301-8650

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 6

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
307 services99 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
221 services94 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
76 services76 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
47 services46 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
41 services41 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
27 services27 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94117 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.

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.

JESSICA ESPINO MANGALIAG
Student in an Organized Health Care Education/Training Program
450 STANYAN ST
SAN FRANCISCO, CA 94117
San Francisco County (415) 750-5942
FIONA PATRICIA MCCUSKER
Physical Medicine & Rehabilitation
450 STANYAN ST
SAN FRANCISCO, CA 94117
San Francisco County (415) 668-1000
JENNIFER JIMENEZ OTD
Occupational Therapist
450 STANYAN ST
SAN FRANCISCO, CA 94117
San Francisco County (877) 341-7472
JASON DOUGLAS
Occupational Therapist
450 STANYAN ST
SAN FRANCISCO, CA 94117
San Francisco County (415) 668-1000
DARIANNE ZIMMER
Student in an Organized Health Care Education/Training Program
450 STANYAN ST
SAN FRANCISCO, CA 94117
San Francisco County (415) 750-5942
DR. STEPHANIE VON FISCHER SEIKI M.D.
Internal Medicine
450 STANYAN ST
SAN FRANCISCO, CA 94117
San Francisco County (415) 750-5909
ALEXA POETER
Speech-Language Pathologist
450 STANYAN ST
SAN FRANCISCO, CA 94117
San Francisco County (415) 722-6965
LEWIS PHILIP SCHENDOWICH MD
Student in an Organized Health Care Education/Training Program
450 STANYAN ST
SAN FRANCISCO, CA 94117
San Francisco County (415) 750-5942

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 Shan Wen's NPI number?

The NPI number for Shan Wen is 1194056465. It was assigned to this individual provider in the NPPES registry on January 26, 2010.

Where is Shan Wen located?

Shan Wen practices at 450 Stanyan St Room T4-33, San Francisco, CA 94117. The listed phone number is (415) 750-4994.

What is Shan Wen's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Shan Wen enrolled in Medicare?

Yes. Shan Wen 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 Shan Wen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Shan Wen reassigns Medicare benefits to 5 organizations: Galen Inpatient Physicians Inc (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA), University Of California San Francisco (San Francisco, CA), Regents Of The University Of California (San Francisco, CA) and San Mateo County (Daly City, 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 Shan Wen'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 Shan Wen was last updated on February 24, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.