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DR. WILLIAM STEPHEN ANDERSON PA-C
NPI 1154611838
Physician Assistant in Brighton, MA

Active since April 14, 2011PECOS EnrolledAccepts Medicare Assignment
736 CAMBRIDGE ST, BRIGHTON, MA 02135(617) 779-6500(617) 779-6785 Get Directions Write a Review

NPPES record last updated: February 17, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Nov 19, 2025, Feb 19, 2025, Feb 23, 2022 (3 updates tracked since 2022).

About Dr. William Stephen Anderson Pa-c NPPES

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

DR. WILLIAM STEPHEN ANDERSON PA-C (NPI 1154611838) is an individual physician assistant in Brighton, Massachusetts, licensed in Rhode Island (PA01652) and active in the NPI registry since April 2011. He is enrolled in Medicare PECOS, is affiliated with Sturdy Memorial Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1154611838
Entity TypeIndividualMale
Primary Taxonomy363A00000X
Provider Legal NameDR. WILLIAM STEPHEN ANDERSONCredential: PA-C
Location Address736 CAMBRIDGE STBrighton, MA 02135-2907
Mailing Address100 Oneil BlvdAttleboro, MA 02703-4250 · (508) 342-1103 · Fax (508) 342-1945
Phone(617) 779-6500
Fax(617) 779-6785
Sole ProprietorYes
Medical School CMSOtherGraduated 2019
Enumeration DateApril 14, 2011
Last NPPES UpdateFebruary 17, 20263 updates tracked since enumeration
NPPES CertifiedFebruary 17, 2026
✔ NPI 1154611838 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License✔ Licensed in RI · PA01652
Definition
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.
Also ListedPhysician Assistant · SurgicalTaxonomy 363AS0400X
736 CAMBRIDGE ST, Brighton, MA 02135
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Secondary Practice Locations 2

Location 1100 ONeil BlvdAttleboro, MA 02703-4250 · Phone (508) 342-1103 · Fax (508) 342-1945
Location 2593 Eddy Street, APC 4Providence, RI 02903 · Phone (401) 444-4700 · Fax (401) 444-6681

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

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

Dr. William Stephen Anderson Pa-c 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 ID3173797107
PECOS Enrollment IDI20210814000001
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 9

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.

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301
Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.
96 services23 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
91 services48 patients
X-ray of wrist, minimum of 3 views 73110
An X-ray of the wrist, minimum of 3 views, is a diagnostic procedure that uses radiation to create images of your wrist from different angles. This helps detect fractures, infections, or other abnormalities for accurate diagnosis and treatment planning.
52 services23 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 services41 patients
X-ray of finger, minimum of 2 views 73140
An X-ray of the finger involves capturing images of your finger from at least two different angles. This non-invasive procedure helps in visualizing the bones and joints, aiding in the diagnosis of fractures, infections, or other abnormalities. Minimal discomfort may be experienced.
25 services19 patients
Aspiration and/or injection of fluid from small joint using ultrasound guidance 20604
This procedure involves using ultrasound to accurately locate a small joint. A needle is then carefully inserted to remove fluid (aspiration) or inject medication. This can help diagnose or treat joint issues. It's generally safe and minimally invasive.
21 services14 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Sturdy Memorial Hospital

Acute Care Hospitals · Attleboro, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number220008
Location211 Park StreetAttleboro, MA 02703 · Bristol County
Emergency services Birthing friendly

Beth Israel Deaconess Hospital - Needham

Acute Care Hospitals · Needham, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220083
Location148 Chestnut StreetNeedham, MA 02494 · Norfolk County
Emergency services

Beth Israel Deaconess Medical Center

Acute Care Hospitals · Boston, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220086
Location330 Brookline AvenueBoston, MA 02215 · Suffolk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02135 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
$97.64 typical visit price
range $63.72 – $189.86
Typical copayment $24.41 (range $15.93 – $47.46)
Most-billed visit code 99203
Established Patient
$78.84 typical visit price
range $21.07 – $155.29
Typical copayment $19.71 (range $5.26 – $38.82)
Most-billed visit code 99213
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.

SOOWHAN LAH M.D.
Internal Medicine
736 CAMBRIDGE ST, INTERNAL MEDICINE RESIDENCY PROGRAM - MAILBOX #13
BOSTON, MA 02135
Suffolk County (503) 886-9722
DR. MAHENDRA CARPEN MD
Internal Medicine (Cardiovascular Disease)
736 CAMBRIDGE ST, DEPT. OF CARDIOLOGY
BRIGHTON, MA 02135
Suffolk County (617) 789-5151
MONIKA BATRA
Psychiatry & Neurology (Psychiatry)
736 CAMBRIDGE ST
BRIGHTON, MA 02135
Suffolk County (617) 789-3000
RONYA OZTURK
Student in an Organized Health Care Education/Training Program
736 CAMBRIDGE ST
BOSTON, MA 02135
Suffolk County (617) 789-3000
ALEXANDER H HU MD
Student in an Organized Health Care Education/Training Program
736 CAMBRIDGE ST
BRIGHTON, MA 02135
Suffolk County (617) 789-3000
DR. ANAS AHMED SAMBAWAH M.D
Student in an Organized Health Care Education/Training Program
736 CAMBRIDGE ST
BRIGHTON, MA 02135
Suffolk County (617) 789-2990
ORFEAS LIANGOS M.D.
Internal Medicine (Nephrology)
736 CAMBRIDGE ST, ST ELIZABETHS MED CTR
BOSTON, MA 02135
Suffolk County (617) 789-3100
LORI H ADCOCK M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
736 CAMBRIDGE ST
BRIGHTON, MA 02135
Suffolk County (617) 789-2740

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 Anderson's NPI number?

The NPI number for William Anderson is 1154611838. It was assigned to this individual provider in the NPPES registry on April 14, 2011.

Where is William Anderson located?

William Anderson practices at 736 Cambridge St, Brighton, MA 02135. The listed phone number is (617) 779-6500.

What is William Anderson's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is William Anderson enrolled in Medicare?

Yes. William Anderson 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.

What insurance does William Anderson accept?

Health plans from Anthem Blue Cross and Blue Shield list William Anderson as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is William Anderson affiliated with any hospitals?

According to CMS data, William Anderson is affiliated with Sturdy Memorial Hospital, Beth Israel Deaconess Hospital - Needham and Beth Israel Deaconess Medical Center.

When was this NPI record last updated?

The NPPES record for William Anderson was last updated on February 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months 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.