What is William Sullivan's specialty?

William Sullivan (NPI 1922107234) is a Medicare-billing provider whose primary specialty is Endocrinology in Boston, MA.

Where does William Sullivan practice?

William Sullivan practices in Boston, MA, based on the location reported in the CMS Medicare provider datasets for NPI 1922107234.

How much does Medicare pay William Sullivan?

William Sullivan (NPI 1922107234) received approximately $54K in total Medicare Part B payments, serving 336 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1922107234

William SullivanM.D.

EndocrinologyBoston, MAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

766

Unique beneficiaries

—

Total services

1,072

Distinct HCPCS

Medicare payment

$53K

Peer benchmark

Total Medicare services vs. 341 Endocrinology providers in MA — above median (cohort median 496).

PRESCRIBING · PART D · 2024

Total Rx claims

3,711

Beneficiaries

—

Total drug cost

$1.8M

Distinct drugs

Brand share

75.8%

Top prescribed drugs

Semaglutide309 claims

Pen Needle, Diabetic216 claims

Metformin Hcl194 claims

Metformin Hcl178 claims

Insulin Glargine,hum.Rec.Anlog160 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$20

Payment records

By payment type

Food and Beverage$20

Top paying entities

Food and Beverage$20

REFERRAL NETWORK

Where William Sullivan's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 20 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
BETH ISRAEL DEACONESS HOSPITAL-NEEDHAM, INC.	374	1,696
Quest Diagnostics Massachusetts Llc Clinical Laboratory · Marlborough, MA	87	320
Daniel Rutowicz Podiatry · Needham, MA	36	110
Perminder Dhillon Internal Medicine · Needham, MA	25	49
Ronald Eisenberg Diagnostic Radiology · Boston, MA	23	79
THE GENERAL HOSPITAL CORPORATION	20	78
George Sharuk Ophthalmology · Boston, MA	20	85
Sabera Shah Ophthalmology · Boston, MA	16	112
Paul Spirn Diagnostic Radiology · Boston, MA	16	49
Cecilia Larson Internal Medicine · Needham, MA	16	44
NI MHUIRCHEARTAIGH, JENNIFER	16	37
Mark Williams Nephrology · Boston, MA	14	97

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events