What is Andrew Himelstein's specialty?

Andrew Himelstein (NPI 1841269966) is a Medicare-billing provider whose primary specialty is Hematology-Oncology in Newark, DE.

Where does Andrew Himelstein practice?

Andrew Himelstein practices in Newark, DE, based on the location reported in the CMS Medicare provider datasets for NPI 1841269966.

How much does Medicare pay Andrew Himelstein?

Andrew Himelstein (NPI 1841269966) received approximately $2.5M in total Medicare Part B payments, serving 494 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1841269966

Andrew HimelsteinMD

Hematology-OncologyNewark, DEI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

874

Unique beneficiaries

—

Total services

20,608

Distinct HCPCS

Medicare payment

$753K

Peer benchmark

Total Medicare services vs. 25 Hematology-Oncology providers in DE — near median (cohort median 969).

PRESCRIBING · PART D · 2024

Total Rx claims

1,136

Beneficiaries

—

Total drug cost

$3.1M

Distinct drugs

Brand share

32.8%

Top prescribed drugs

Anastrozole124 claims

Rivaroxaban90 claims

Apixaban73 claims

Enzalutamide66 claims

Levothyroxine Sodium64 claims

QUALITY · MIPS · 2024

Final MIPS score

85.3

Quality

68.2

Cost

0.0

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.43%

Individual

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$93

Payment records

By payment type

Food and Beverage$93

Top paying entities

Food and Beverage$93

REFERRAL NETWORK

Where Andrew Himelstein'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). 72 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
CHRISTIANA CARE HEALTH SERVICES, INC.	415	6,506
DELAWARE HOSPICE, INC	279	980
Laboratory Corporation Of America Holdings Clinical Laboratory · Raritan, NJ	129	379
BAYHEALTH MEDICAL CENTER, INC.	101	233
BAYHEALTH MEDICAL CENTER, INC.	65	151
Quest Diagnostics Clinical Laboratories Inc Clinical Laboratory · Norristown, PA	47	127
POLISE, MICHAEL	44	88
Brian Callahan Diagnostic Radiology · Lackland A F B, TX	41	72
Peter Chiou Diagnostic Radiology · Eden Prairie, MN	40	77
Gem Ambulance Llc Ambulance Service Provider · Lakewood, NJ	40	66
Bryan Franck Diagnostic Radiology · Newark, DE	39	60
JACKERSON, JEFFREY	39	81

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