PROVIDER PROFILE · NPI 1811984206

John WitherellM.D.

PRACTICEOPHTHALMIC SURGICAL ASSOCIATESSee all providers at this practice →

OphthalmologyChester, PAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,535

Unique beneficiaries

—

Total services

2,985

Distinct HCPCS

Medicare payment

$290K

Peer benchmark

Total Medicare services vs. 810 Ophthalmology providers in PA — above median (cohort median 1,854).

PRESCRIBING · PART D · 2024

Total Rx claims

3,487

Beneficiaries

—

Total drug cost

$434K

Distinct drugs

Brand share

34.0%

Top prescribed drugs

Prednisolone Acetate626 claims

Latanoprost618 claims

Erythromycin Base453 claims

Ciprofloxacin Hcl365 claims

Brimonidine Tartrate183 claims

QUALITY · MIPS · 2024

Final MIPS score

87.3

Quality

80.8

Cost

76.9

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.52%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$649

Payment records

By payment type

Food and Beverage$649

REFERRAL NETWORK

Where John Witherell'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). 24 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
CROZER-CHESTER MEDICAL CENTER	368	1,363
Quest Diagnostics Clinical Laboratories Inc Clinical Laboratory · Norristown, PA	93	211
MORRISON, KEVIN	72	228
Laboratory Corporation Of America Holdings Clinical Laboratory · Raritan, NJ	67	197
RIDDLE MEMORIAL HOSPITAL	51	110
Cynthia Foore Certified Registered Nurse Anesthetist (CRNA) · Chester, PA	33	94
Anuj Prasad Internal Medicine · Glen Mills, PA	19	91
NOLEN-WALSTON, ALICE	19	59
Vera Howland Internal Medicine · Chester, PA	17	100
DOMBKOSKI, RUTH	16	40
Desiree Zanghi Certified Registered Nurse Anesthetist (CRNA) · Chester, PA	16	56
Meena Raman Anesthesiology · Upland, PA	16	51

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