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DR. WILLIAM A BUTLER M.D.
NPI 1831724939
Psychiatry & Neurology - Psychiatry in Boston, MA

Active since March 09, 2020PECOS EnrolledAccepts Medicare Assignment
32 FRUIT ST STE 6A, BOSTON, MA 02114(617) 855-3965 Get Directions Write a Review

NPPES record last updated: April 21, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jan 17, 2023, Jan 13, 2023, Mar 9, 2020 (3 updates tracked since 2020).

About Dr. William A Butler M.d. NPPES

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

DR. WILLIAM A BUTLER M.D. (NPI 1831724939) is an individual psychiatry provider in Boston, Massachusetts, licensed in Massachusetts (1016249) and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS, is affiliated with North Shore Medical Center -, and is a graduate of Florida State University College Of Medicine (2021).

NPPES Registry Identity

NPI1831724939
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. WILLIAM A BUTLERCredential: M.D.
Location Address32 FRUIT ST STE 6ABoston, MA 02114-2620
Mailing Address6 Liberty Sq # 6246Boston, MA 02109-5800 · (617) 468-6443
Phone(617) 855-3965
Sole ProprietorYes
Medical School CMSFlorida State University College Of MedicineGraduated 2021
Enumeration DateMarch 9, 2020
Last NPPES UpdateApril 21, 20253 updates tracked since enumeration
NPPES CertifiedApril 21, 2025
✔ NPI 1831724939 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in MA · 1016249
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
32 FRUIT ST STE 6A, Boston, MA 02114
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Harvard Pilgrim Health Care, Taro Health, WellSense Health Plan.Insurance ›

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

Dr. William A Butler 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 ID3577962224
PECOS Enrollment IDI20231214000928
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 William Butler reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The General Hospital Corporation
0.1 mi
General Acute Care Hospital
55 FRUIT ST, BULFINCH 360
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,234 clinicians in this Medicare group
NPI 1023049236 (617) 726-2000
Massachusetts General Physicians Organization Inc
0.1 mi
Dermatology
55 FRUIT ST, BUL 2
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,360 clinicians in this Medicare group
NPI 1801874573 (617) 724-0287
Boston Psychiatry Center, PLLC
6.4 mi
Psychiatry
50 CHURCH ST STE B
Belmont, MA 02478
  • Reassigned Medicare billing, Massachusetts enrollment
  • 3 clinicians in this Medicare group
NPI 1730972100 (617) 468-5048
Mass General Brigham Medical Group Suburban Massachusetts Inc
9.3 mi
Family Medicine
2014 WASHINGTON STREET
Newton, MA 02462
  • Reassigned Medicare billing, Massachusetts enrollment
  • 992 clinicians in this Medicare group
NPI 1538191218 (617) 243-6262
Mass General Brigham Medical Group Northern Massachusetts Inc
13 mi
Emergency Medicine
81 HIGHLAND AVE
Salem, MA 01970
  • Reassigned Medicare billing, Massachusetts enrollment
  • 994 clinicians in this Medicare group
NPI 1588606123 (978) 354-4173

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

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

North Shore Medical Center -

Acute Care Hospitals · Salem, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220035
Location81 Highland AvenueSalem, MA 01970 · Essex County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02114 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
$189.86 typical visit price
range $63.72 – $189.86
Typical copayment $47.46 (range $15.93 – $47.46)
Most-billed visit code 99205
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

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

MORGAN GABRIELLE DAVIS
Doula
32 FRUIT ST STE 6A
BOSTON, MA 02114
Suffolk County (617) 383-9648

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 Butler's NPI number?

The NPI number for William Butler is 1831724939. It was assigned to this individual provider in the NPPES registry on March 9, 2020.

Where is William Butler located?

William Butler practices at 32 Fruit St Ste 6A, Boston, MA 02114. The listed phone number is (617) 855-3965.

What is William Butler's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is William Butler enrolled in Medicare?

Yes. William Butler 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 William Butler's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Butler reassigns Medicare benefits to 5 organizations: The General Hospital Corporation (Boston, MA), Massachusetts General Physicians Organization Inc (Boston, MA), Boston Psychiatry Center, PLLC (Belmont, MA), Mass General Brigham Medical Group Suburban Massachusetts Inc (Newton, MA) and Mass General Brigham Medical Group Northern Massachusetts Inc (Salem, MA). 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 William Butler's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Butler accept?

Health plans from Harvard Pilgrim Health Care, Taro Health and WellSense Health Plan list William Butler 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 Butler affiliated with any hospitals?

According to CMS data, William Butler is affiliated with North Shore Medical Center -.

When was this NPI record last updated?

The NPPES record for William Butler was last updated on April 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.