What is Michael Amster's specialty?

Michael Amster (NPI 1114023058) is a Medicare-billing provider whose primary specialty is Interventional Pain Management in Santa Cruz, CA.

Where does Michael Amster practice?

Michael Amster practices in Santa Cruz, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1114023058.

How much does Medicare pay Michael Amster?

Medicare Part B utilization, prescribing (Part D), MIPS quality scores, and industry payments for Michael Amster (NPI 1114023058) are detailed on this CareTrace profile.

PROVIDER PROFILE · NPI 1114023058

Michael Amster

PRACTICESANTA CRUZ COMMUNITY HEALTH CENTERSSee all providers at this practice →

Interventional Pain ManagementSanta Cruz, CAI

MEDICARE UTILIZATION · PART B · 2024

No data available for this provider in 2024.

PRESCRIBING · PART D · 2024

Total Rx claims

219

Beneficiaries

—

Total drug cost

$8K

Distinct drugs

Brand share

36.1%

Top prescribed drugs

Tramadol Hcl43 claims

Oxycodone Hcl41 claims

Hydrocodone/Acetaminophen33 claims

Morphine Sulfate32 claims

Duloxetine Hcl24 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (1)

CCN 050242

Hospital

REFERRAL NETWORK

Where Michael Amster'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). 2 inbound referrers · 8 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Northbay Healthcare Group Ambulatory Surgical Center · Vacaville, CA	51	257
VISTA IMAGING SERVICES, INC	30	101

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Unilab Corporation Clinical Laboratory · Sacramento, CA	65	219
VISTA IMAGING SERVICES, INC	49	229
NORTHBAY HEALTHCARE GROUP	35	158
Northbay Healthcare Group Ambulatory Surgical Center · Vacaville, CA	31	70
Cynthia Tan Diagnostic Radiology · Maywood, IL	26	50
Mayre Lee Nurse Practitioner · Vacaville, CA	19	36
Sutter Valley Medical Foundation Clinical Laboratory · Sacramento, CA	13	56
James Bronk Diagnostic Radiology · Fairfield, CA	12	21

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