William Christopher Sullivan , PA-C
Physician Assistant • Irvine, CA
1 Fire Authority Rd
Irvine, CA 926020125
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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William Sullivan is listed in NPPES under Physician Assistant.
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NPI assigned on October 1, 2012; this date does not establish years in practice.
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Published CMS data list 301 Original Medicare Part B services in 2023.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2023. Published rows only; this is not a quality measure.
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Published Part B service records, 2023:
- 99342 — Residence visit for new patient with low level of medical decision making, per day: 58 service units.
- 99348 — Residence visit for established patient with low level of medical decision making, per day: 57 service units.
- 80047 — Blood test, basic group of blood chemicals (calcium, ionized): 32 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2023. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2022 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2023). CPT notice
See all 10 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 25 Medicare Part D prescriptions, including refills, in 2023.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2023. Published rows only; this is not a quality measure.
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Published Part D records, 2023:
- Prednisone — 14 prescription fills, including refills.
- Doxycycline Hyclate — 11 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2023. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
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Medicare Part B services went from 112 in 2017 to 301 in 2023.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2023.
Practice Location & Contact Primary Location
1 Fire Authority Rd
Irvine, CA 926020125
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $11,291 in 2023
The total amount Medicare approved for these services in 2023. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2023.
Paid by Medicare
About $9,106 in 2023
The part of the Medicare-allowed amount that Medicare itself paid in 2023, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2023.
30-day fills
25 standardized 30-day fills in 2023
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$145 in 2023
The total cost of these prescriptions in 2023, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2023.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2021–2025.
NPI first issued
2012
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
William Sullivan has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists William Sullivan as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Irvine and California
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for William Sullivan are from 2023.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for William Sullivan are from 2023.
120 active clinicians are listed under Physician Assistant with a practice address in Irvine, CA (14,458 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Irvine
20.8% of these 120 clinicians have the CMS telehealth indicator.
55.8% of these 120 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 169% from 112 in 2017 to 301 in 2023.
- 2017: 112
- 2019: 102
- 2023: 301
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Medicare-allowed amount
Medicare-allowed amount increased 58% from $7,149 in 2017 to $11,291 in 2023.
- 2017: $7,149
- 2019: $10,697
- 2023: $11,291
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Paid by Medicare
Paid by Medicare increased 147% from $3,687 in 2017 to $9,106 in 2023.
- 2017: $3,687
- 2019: $7,952
- 2023: $9,106
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 93% from 341 in 2016 to 25 in 2023.
- 2016: 341
- 2017: 144
- 2018: 99
- 2019: 48
- 2023: 25
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30-day fills
30-day fills decreased 93% from 342 in 2016 to 25 in 2023.
- 2016: 342
- 2017: 145
- 2018: 100
- 2019: 48
- 2023: 25
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Part D drug cost
Part D drug cost decreased 97% from $5,123 in 2016 to $145 in 2023.
- 2016: $5,123
- 2017: $1,939
- 2018: $1,357
- 2019: $434
- 2023: $145
Sources: CMS Medicare Physician & Other Practitioners (2023), CMS Medicare Part D Prescribers (2023), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2022 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2023; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99342
Residence visit for new patient with low level of medical decision making, per day, if using time, at least 30 minutes
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58 | 58 | $375.00 | $69.71 |
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99348
Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes
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57 | 43 | $375.00 | $68.57 |
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80047
Blood test, basic group of blood chemicals (calcium, ionized)
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32 | 28 | $27.00 | $13.46 |
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85014
Red blood cell concentration measurement
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32 | 28 | $6.00 | $2.32 |
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36415
Insertion of needle into vein for collection of blood sample
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30 | 25 | $21.77 | $7.90 |
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99341
Residence visit for new patient with straightforward medical decision making, per day, if using time, at least 15 minutes
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29 | 29 | $375.00 | $43.87 |
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93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
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22 | 20 | $35.00 | $13.51 |
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81002
Urinalysis, manual test
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17 | 16 | $7.00 | $3.41 |
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99347
Residence visit for established patient with straightforward medical decision making, per day, if using time, at least 15 minutes
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13 | 13 | $375.00 | $40.29 |
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87811
Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19)
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11 | 11 | $82.76 | $40.55 |
Source: CMS Part B by Provider and Service, 2023; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2023.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Prednisone | Prednisone | 14 | 64 | $24.78 | 14 |
| Doxycycline Hyclate | Doxycycline Hyclate | 11 | 79 | $120.48 | 11 |
Source: CMS Part D by Provider and Drug, 2023; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2022-03-02NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20121116000289
CA
1355592544
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1 FIRE AUTHORITY RD, IRVINE, CA 926020125 (Tel: 9492056129)
Registered at 1 FIRE AUTHORITY RD, IRVINE, CA 926020125 (Tel: 9492056129)
NPI status registered as active in NPPES database
Registered at 72780 COUNTRY CLUB DR, BLDG B 203, RANCHO MIRAGE, CA 922704126 (Tel: 7606743847)
Registered at 72780 COUNTRY CLUB DR, BLDG B 203, RANCHO MIRAGE, CA 922704126 (Tel: 7606743847)
Recorded as WILLIAM SULLIVAN, PA-C
Physician Assistant (license number reported to NPPES: CA PA22590)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Irvine
- Pollyanna Tang, PA-C
- Molly Pelz
- Michaela Jackson, PA-C
- Theodora Nguyen, PA-C
- Andrew Phan, MSPAS
- Catherine Jeter, PA-C
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Mailing Address
1 Fire Authority Rd
Irvine, CA 926020125
Phone: 9492056129