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DR. CALVIN HAYES HIRSCH MD
NPI 1073597332
Internal Medicine in Sacramento, CA

Active since November 30, 2005PECOS Enrolled
4150 V ST, SUITE 2400, SACRAMENTO, CA 95817(916) 734-7005(916) 734-2732 Get Directions Write a Review

NPPES record last updated: March 7, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Calvin Hayes Hirsch Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CALVIN HAYES HIRSCH MD (NPI 1073597332) is an individual internal medicine provider in Sacramento, California, licensed in California (G47136) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1073597332
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. CALVIN HAYES HIRSCHCredential: MD
Location Address4150 V ST, SUITE 2400Sacramento, CA 95817-1460
Mailing Address1626 Westshore StDavis, CA 95616-2972 · (530) 756-2411
Phone(916) 734-7005
Fax(916) 734-2732
Sole ProprietorNo
Enumeration DateNovember 30, 2005
Last NPPES UpdateMarch 7, 2023
✔ NPI 1073597332 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · G47136
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedInternal Medicine · Geriatric MedicineTaxonomy 207RG0300X · License G47136 (CA)
4150 V ST, Sacramento, CA 95817
Open in Google Maps ↗

Other Identifiers 1

MedicaidG47136CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Calvin Hayes Hirsch Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Calvin Hirsch reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Regents Of The Univ Of Ca
Same address
Maternal & Fetal Medicine
4860 Y ST
Sacramento, CA 95817
  • Reassigned Medicare billing, California enrollment
  • 2,570 clinicians in this Medicare group
NPI 1013906973 (916) 734-6930

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95817 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$137.20 typical visit price
range $60.44 – $180.85
Typical copayment $34.30 (range $15.11 – $45.21)
Most-billed visit code 99204
Established Patient
$105.95 typical visit price
range $19.88 – $148.15
Typical copayment $26.48 (range $4.97 – $37.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
1 supplier11 claims11 services$13.50 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier11 claims11 services$57.04 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KENNETH D. WHEELER CRNA
Nurse Anesthetist, Certified Registered
4150 V ST, PSSB-SUITE 1200, MED: ANESTHESIA
SACRAMENTO, CA 95817
Sacramento County (916) 734-7985
DR. MICHAEL JOHN THORNTON MD
Internal Medicine (Critical Care Medicine)
4150 V ST, SUITE 3400
SACRAMENTO, CA 95817
Sacramento County (916) 734-3566
THOMAS M. GOODNOW CRNA
Nurse Anesthetist, Certified Registered
4150 V ST, PSSB-SUITE 1200, MED: ANESTHESIA
SACRAMENTO, CA 95817
Sacramento County (916) 734-7985
DR. POURIA KASHKOULI M.D.
Internal Medicine
4150 V ST, #3116
SACRAMENTO, CA 95817
Sacramento County (916) 734-7080
DR. ALISON SEMRAD D.O.
Internal Medicine (Endocrinology, Diabetes & Metabolism)
4150 V ST, #3116
SACRAMENTO, CA 95817
Sacramento County (916) 734-7080
DR. DIANE HADDOCK M.D.
Internal Medicine
4150 V ST, #3116
SACRAMENTO, CA 95817
Sacramento County (916) 734-7080
JOHN S MILLAR M.D.
Internal Medicine (Critical Care Medicine)
4150 V ST, SUITE 3400
SACRAMENTO, CA 95817
Sacramento County (916) 734-3564
UC DAVIS
General Acute Care Hospital
4150 V ST, 2100
SACRAMENTO, CA 95817
Sacramento County (916) 734-8583

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Calvin Hirsch's NPI number?

The NPI number for Calvin Hirsch is 1073597332. It was assigned to this individual provider in the NPPES registry on November 30, 2005.

Where is Calvin Hirsch located?

Calvin Hirsch practices at 4150 V St Suite 2400, Sacramento, CA 95817. The listed phone number is (916) 734-7005.

What is Calvin Hirsch's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Calvin Hirsch enrolled in Medicare?

Yes. Calvin Hirsch is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Calvin Hirsch's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Calvin Hirsch reassigns Medicare benefits to Regents Of The Univ Of Ca (Sacramento, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Calvin Hirsch's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Calvin Hirsch was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.