Annabelle Willey, PA-C

  • San Francisco, CA
  • Physician assistant
NPI1598335762PAC ID0446649727
Medicare services, 2024
427
Medicare patients, 2024
298
Part D claims, 2024
211
Medical group
1
Year NPI issued
2021
Practice address
2131 Irving St, San Francisco, CA 94122
Practice phone
Call (510) 686-3621
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Carbon Health Urgent & Primary Care - San Francisco Irving St

San Francisco, California

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Annabelle Willey is a physician assistant in San Francisco, California

Annabelle Willey practices at Carbon Health Urgent & Primary Care - San Francisco Irving St in San Francisco, California.

Annabelle Willey's NPI, 1598335762, was assigned on June 29, 2021.

NPI and contact details
Medicare PAC ID
0446649727
NPI enumeration date
June 29, 2021
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(510) 686-3621
Professional email
Get email
Personal email
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Mobile number
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Sex
Female
Estimated age
31
Medical school graduation
2021

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Annabelle Willey practices at Carbon Health Urgent & Primary Care - San Francisco Irving St in San Francisco, California

Annabelle Willey's primary practice is Carbon Health Urgent & Primary Care - San Francisco Irving St, at 2131 Irving St, San Francisco, CA 94122 in San Francisco County. The practice phone is (510) 686-3621.

  • Carbon Health Urgent & Primary Care - San Francisco Irving St
    2131 Irving St, San Francisco, CA 94122 · San Francisco CountyPhone(510) 686-3621

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Annabelle Willey is affiliated with 1 site of care and 1 medical group

Annabelle Willey's primary practice is Carbon Health Urgent & Primary Care - San Francisco Irving St in San Francisco, California. The medical group on file is Carbon Health.

Carbon Health Urgent & Primary Care - San Francisco Irving StSan Francisco, CaliforniaPrimary
Carbon HealthPrimary care group, Oakland, CA

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Annabelle Willey's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Annabelle Willey practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Carbon Health Urgent & Primary Care - San Francisco Irving StAvailable with a free account

Source: Dmand AI Technology Install Data

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Annabelle Willey is one of 11,482 physician assistants in California

Physician assistant is Annabelle Willey's primary specialty in the NPI Registry, under taxonomy code 363A00000X.

Specialties and state licenses

  • Physician assistantPrimarytaxonomy 363A00000X

Clinical focus

Dmand AI lists acute sinusitis, acute skin infection, ankle or foot injury, chronic kidney disease, chronic obstructive pulmonary disease (COPD), gastroenteritis, insomnia and muscle pain, fibromyalgia, and limb pain among the conditions Annabelle Willey treats.

Physician assistants near Annabelle Willey

Counts of physician assistants with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Annabelle Willey billed Medicare for 427 services in 2024

CMS data shows 427 Medicare services from Annabelle Willey across 8 procedure codes in 2024, for 298 Medicare patients. Medicare paid $29,398 for them. Every service was in an office.

Medicare services, 2024427
Medicare patients298
Paid by Medicare$29,398
Procedure codes8

Annabelle Willey's Medicare services by type, 2024

  1. Office and hospital visits317
  2. Lab and pathology110

Annabelle Willey compared with the California median for physician assistants, 2024

  • Annabelle Willey
  • California median
Medicare services
427vs 2042.1 times
Medicare patients
298vs 1052.8 times
Part D claims
112vs 24354% below

Medians across 7,065 physician assistants in California with Dmand AI profiles that report each measure.

Annabelle Willey's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Annabelle Willey

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Annabelle Willey treated 298 Medicare patients in 2024, average age 75

CMS counts 298 Medicare patients who saw Annabelle Willey in 2024. The largest group is 65 to 74, with 146 patients. 69% of them have high cholesterol, and 56% have high blood pressure. 8% are also on Medicaid. Their average risk score is 0.94, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Annabelle Willey's median patient age at 35, with 54% women.

Medicare patients, 2024298
Average age75
Average risk score0.94
Also on Medicaid8%

Annabelle Willey's Medicare patients by age, 2024

Annabelle Willey's Medicare patients by sex, 2024

  • Women20569%
  • Men9331%

Chronic conditions among Annabelle Willey's Medicare patients, 2024

  1. High cholesterol69%
  2. High blood pressure56%
  3. Arthritis49%
  4. Anxiety28%
  5. Mood disorders23%
  6. Ischemic heart disease21%
  7. Osteoporosis21%
  8. Depression19%

Share of Medicare patients with each condition. A patient can have several.

Annabelle Willey's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 35

Patient panel by sex, all payers

  • Women54%
  • Men42%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Annabelle Willey wrote 211 Medicare Part D claims in 2024

In 2024, Annabelle Willey wrote 211 Medicare Part D claims for 168 patients. 87% of them were for generic drugs. CMS names the drug for 112 of them, across 7 drugs with 11 or more claims each, at $569 in total drug cost.

Part D claims, 2024211
Drugs named by CMS7
Total drug cost$569
Part D patients168

Annabelle Willey's Part D claims by kind of drug, 2024

  • Generic183 claims87%
  • Brand-name and other28 claims13%

Annabelle Willey's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Annabelle Willey's Part D claims, 2024

  • Antibiotics53%111 of 211 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

See all prescribing by Annabelle Willey

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

How Annabelle Willey takes part in Medicare

Annabelle Willey accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Sources for Annabelle Willey's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Annabelle Willey

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Annabelle Willey's NPI number?

Annabelle Willey's NPI number is 1598335762. It was assigned on June 29, 2021, and it is active in the NPI Registry.

What does Annabelle Willey specialize in?

Annabelle Willey is a physician assistant in San Francisco, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).

Where does Annabelle Willey practice?

Annabelle Willey practices at 2131 Irving St, San Francisco, CA 94122. Annabelle Willey's primary practice is Carbon Health Urgent & Primary Care - San Francisco Irving St in San Francisco, California.

What is Annabelle Willey's office phone number?

The practice phone on file for Annabelle Willey is (510) 686-3621.

What medical group is Annabelle Willey part of?

Annabelle Willey is linked to Carbon Health.

Does Annabelle Willey accept Medicare?

Yes. CMS data shows Annabelle Willey billed Medicare for 427 services in 2024, and Annabelle Willey accepts Medicare assignment.

How many Medicare patients does Annabelle Willey see?

CMS counts 298 Medicare patients who saw Annabelle Willey in 2024, with an average age of 75.

What services does Annabelle Willey bill to Medicare?

In 2024, Annabelle Willey's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99204) and office visit, established patient (99213).

What drugs does Annabelle Willey prescribe most?

In 2024 Medicare Part D data, Annabelle Willey's most prescribed drugs by claims were Cephalexin, Paxlovid and Nitrofurantoin Mono-Macro.

How long has Annabelle Willey been practicing?

Annabelle Willey graduated from medical school in 2021, 5 years ago.

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