What is Jon Ernstoff's specialty?

Jon Ernstoff (NPI 1598789653) is a Medicare-billing provider whose primary specialty is Gastroenterology in Meriden, CT.

Where does Jon Ernstoff practice?

Jon Ernstoff practices in Meriden, CT, based on the location reported in the CMS Medicare provider datasets for NPI 1598789653.

How much does Medicare pay Jon Ernstoff?

Jon Ernstoff (NPI 1598789653) received approximately $4K in total Medicare Part B payments, serving 32 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1598789653

Jon ErnstoffM.D.

GastroenterologyMeriden, CTI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

Distinct HCPCS

Medicare payment

$2K

Peer benchmark

Total Medicare services vs. 260 Gastroenterology providers in CT — bottom quintile (cohort median 519).

PRESCRIBING · PART D · 2024

Total Rx claims

103

Beneficiaries

—

Total drug cost

$2K

Distinct drugs

Brand share

0.0%

Top prescribed drugs

Pantoprazole Sodium53 claims

Famotidine33 claims

Omeprazole17 claims

QUALITY · MIPS · 2024

Final MIPS score

86.6

Quality

84.9

Cost

71.3

Improvement activities

40.0

Promoting interop.

99.0

Payment adjustment

0.49%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Jon Ernstoff'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). 34 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
MIDSTATE MEDICAL CENTER	244	837
HARTFORD HEALTHCARE LABORATORIES	162	718
LUDWIG, MARK	80	182
Quest Diagnostics Llc Clinical Laboratory · Wallingford, CT	48	150
Gregory Iafrate Diagnostic Radiology · East Providence, RI	42	101
Mitesh Trivedi Diagnostic Radiology · New Haven, CT	41	83
Bela Mandavilli Pathology · East Hartford, CT	39	87
Keith Boldon Anesthesiology · Meriden, CT	39	79
Cybill Thomas Nurse Practitioner · Waterbury, CT	31	65
HAJEDEMOS, HARRY	30	72
William Farrell Cardiology · Wallingford, CT	27	83
Amritlal Dalsania Anesthesiology · Meriden, CT	26	48

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