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WILLIAM F SIMMONS MD
NPI 1326537721
Internal Medicine - Infectious Disease in San Francisco, CA

Active since May 02, 2018PECOS EnrolledAccepts Medicare Assignment
74.46/100
CMS Quality Rating
400 PARNASSUS AVE # 336, SAN FRANCISCO, CA 94143(415) 353-2626(415) 353-3528 Get Directions Write a Review

NPPES record last updated: August 7, 2023. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Aug 7, 2023, Jul 20, 2020, May 2, 2018 (3 updates tracked since 2018).

About William F Simmons Md NPPES

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

WILLIAM F SIMMONS MD (NPI 1326537721) is an individual infectious disease provider in San Francisco, California, licensed in California (A186895) and active in the NPI registry since May 2018. He is enrolled in Medicare PECOS and is a graduate of Columbia University College Of Physicians And Surgeons (2018).

NPPES Registry Identity

NPI1326537721
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameWILLIAM F SIMMONSCredential: MD
Location Address400 PARNASSUS AVE # 336San Francisco, CA 94143-2202
Mailing Address400 Parnassus Ave # 336San Francisco, CA 94143-2202 · (415) 353-2626 · Fax (415) 353-3528
Phone(415) 353-2626
Fax(415) 353-3528
Sole ProprietorNo
Medical School CMSColumbia University College Of Physicians And SurgeonsGraduated 2018
Enumeration DateMay 2, 2018
Last NPPES UpdateAugust 7, 20233 updates tracked since enumeration
NPPES CertifiedAugust 7, 2023
✔ NPI 1326537721 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in CA · A186895
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
400 PARNASSUS AVE # 336, San Francisco, CA 94143
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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 and accepts Medicare assignment

William F Simmons Md 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 ID7719238492
PECOS Enrollment IDI20230719003894
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.

Areas of Expertise CMS Part B claims 7

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.
94 services48 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
83 services47 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.
46 services46 patients
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.
44 services33 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
29 services29 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.
26 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94143 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

74.46/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability76
Improvement Activities40
Cost46.68

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KATIE WOODS HUNTER
Nurse Practitioner (Acute Care)
400 PARNASSUS AVE # 336
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-2626

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 Simmons's NPI number?

The NPI number for William Simmons is 1326537721. It was assigned to this individual provider in the NPPES registry on May 2, 2018.

Where is William Simmons located?

William Simmons practices at 400 Parnassus Ave # 336, San Francisco, CA 94143. The listed phone number is (415) 353-2626.

What is William Simmons's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is William Simmons enrolled in Medicare?

Yes. William Simmons 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 William Simmons was last updated on August 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.