What is Colleen Hammerstone's specialty?

Colleen Hammerstone (NPI 1285038166) is a Medicare-billing provider whose primary specialty is Physician Assistant in Allentown, PA.

Where does Colleen Hammerstone practice?

Colleen Hammerstone practices in Allentown, PA, based on the location reported in the CMS Medicare provider datasets for NPI 1285038166.

How much does Medicare pay Colleen Hammerstone?

Colleen Hammerstone (NPI 1285038166) received approximately $18K in total Medicare Part B payments, serving 139 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1285038166

Colleen HammerstonePA-C

PRACTICELEHIGH VALLEY PHYSICIAN GROUPSee all providers at this practice →

Physician AssistantAllentown, PAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

120

Unique beneficiaries

—

Total services

127

Distinct HCPCS

Medicare payment

$16K

Peer benchmark

Total Medicare services vs. 7,199 Physician Assistant providers in PA — below median (cohort median 192).

PRESCRIBING · PART D · 2024

Total Rx claims

1,276

Beneficiaries

—

Total drug cost

$15K

Distinct drugs

Brand share

6.2%

Top prescribed drugs

Oxycodone Hcl357 claims

Amoxicillin234 claims

Mupirocin220 claims

Celecoxib203 claims

Methocarbamol55 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$186

Payment records

By payment type

Food and Beverage$186

Top paying entities

Food and Beverage$186

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (2)

CCN 390133

Hospital

CCN 393035

Inpatient rehabilitation facility

REFERRAL NETWORK

Where Colleen Hammerstone'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 · 3 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
REX HOSPITAL INC.	13	36

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
REX HOSPITAL INC.	23	80
Mark Galland Orthopedic Surgery · Raleigh, NC	17	42
Michelle Fegeley Physician Assistant · Raleigh, NC	11	14

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