What is John Granquist's specialty?

John Granquist (NPI 1699821892) is a Medicare-billing provider whose primary specialty is Cardiology in Hartford, CT.

Where does John Granquist practice?

John Granquist practices in Hartford, CT, based on the location reported in the CMS Medicare provider datasets for NPI 1699821892.

How much does Medicare pay John Granquist?

John Granquist (NPI 1699821892) received approximately $271K in total Medicare Part B payments, serving 3,903 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1699821892

John GranquistM.D.

CardiologyHartford, CTI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

5,563

Unique beneficiaries

—

Total services

7,898

Distinct HCPCS

Medicare payment

$261K

Peer benchmark

Total Medicare services vs. 375 Cardiology providers in CT — top quintile (cohort median 1,798).

PRESCRIBING · PART D · 2024

Total Rx claims

6,963

Beneficiaries

—

Total drug cost

$2.0M

Distinct drugs

Brand share

28.4%

Top prescribed drugs

Metoprolol Succinate1,007 claims

Apixaban880 claims

Atorvastatin Calcium530 claims

Amlodipine Besylate414 claims

Losartan Potassium340 claims

QUALITY · MIPS · 2024

Final MIPS score

87.7

Quality

68.4

Cost

76.6

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.54%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where John Granquist'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). 273 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
HARTFORD HEALTHCARE LABORATORIES	588	1,468
Aetna Ambulance Service, Inc Ambulance Service Provider · Hartford, CT	338	617
American Medical Response Of Connecticut Incorporated Ambulance Service Provider · New Haven, CT	285	499
Maximilian Lee Cardiology · Hartford, CT	269	524
Ambulance Service Of Manchester, Llc Ambulance Service Provider · Manchester, CT	263	527
Quest Diagnostics Llc Clinical Laboratory · Wallingford, CT	262	629
Douglas Moote Diagnostic Radiology · Hartford, CT	190	281
Jeffrey Walden Cardiology · Hartford, CT	184	408
KALLAL, JAMES	183	291
Melissa Ferraro-Borgida Cardiology · Hartford, CT	173	337
Komsu Mamuya Cardiology · Wethersfield, CT	165	361
Bret Coughlin Diagnostic Radiology · Hartford, CT	163	253

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