What is John O'block's specialty?

John O'block (NPI 1427200724) is a Medicare-billing provider whose primary specialty is Optometry in Derry, NH.

Where does John O'block practice?

John O'block practices in Derry, NH, based on the location reported in the CMS Medicare provider datasets for NPI 1427200724.

How much does Medicare pay John O'block?

John O'block (NPI 1427200724) received approximately $61K in total Medicare Part B payments, serving 515 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1427200724

John O'blockO.D.

OptometryDerry, NHI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

827

Unique beneficiaries

—

Total services

915

Distinct HCPCS

Medicare payment

$61K

Peer benchmark

Total Medicare services vs. 196 Optometry providers in NH — above median (cohort median 461).

PRESCRIBING · PART D · 2024

Total Rx claims

185

Beneficiaries

—

Total drug cost

$26K

Distinct drugs

Brand share

53.5%

Top prescribed drugs

Latanoprost56 claims

Neomycin/Polymyxin B/Dexametha50 claims

Lifitegrast19 claims

Bimatoprost18 claims

Prednisolone Acetate16 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$712

Payment records

By payment type

Food and Beverage$712

Top paying entities

Food and Beverage$712

REFERRAL NETWORK

Where John O'block'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). 1 inbound referrers · 5 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
HCA HEALTH SERVICES OF NEW HAMPSHIRE INC	22	51

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
HCA HEALTH SERVICES OF NEW HAMPSHIRE INC	20	30
Quest Diagnostics Llc Clinical Laboratory · Marlborough, MA	19	29
Gerald Spindel Ophthalmology · Derry, NH	16	32
David Vazan Ophthalmology · Derry, NH	14	15
ELLIOT HOSPITAL OF THE CITY OF MANCHESTER	11	24

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