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JUSTIN NICHOLAS HAMMAN MD
NPI 1245859818
Anesthesiology in Sacramento, CA

Active since April 13, 2020PECOS EnrolledAccepts Medicare Assignment
4150 V STREET, PSSB 1200, SACRAMENTO, CA 95817(916) 734-5028 Get Directions Write a Review

NPPES record last updated: July 28, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 4, 2021, Apr 16, 2020 (2 updates tracked since 2020).

About Justin Nicholas Hamman Md NPPES

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

JUSTIN NICHOLAS HAMMAN MD (NPI 1245859818) is an individual anesthesiology provider in Sacramento, California, licensed in California (A183010) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS and is a graduate of Other (2020).

NPPES Registry Identity

NPI1245859818
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameJUSTIN NICHOLAS HAMMANCredential: MD
Location Address4150 V STREET, PSSB 1200Sacramento, CA 95817
Mailing Address4150 V Street, Pssb 1200Sacramento, CA 95817-2837 · (916) 734-5028
Phone(916) 734-5028
Sole ProprietorYes
Medical School CMSOtherGraduated 2020
Enumeration DateApril 13, 2020
Last NPPES UpdateJuly 28, 20252 updates tracked since enumeration
NPPES CertifiedJuly 28, 2025
✔ NPI 1245859818 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in CA · A183010
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
4150 V STREET, PSSB 1200, Sacramento, CA 95817
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Justin Nicholas Hamman Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4587086582
PECOS Enrollment IDI20250811003778
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 Reassignments

2

Medicare enrollment records show Justin Hamman reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

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
Central Anesthesia Service Exchange Medical Group, Inc.
7.3 mi
Anesthesiology
3315 WATT AVE.
Sacramento, CA 95821
  • Reassigned Medicare billing, California enrollment
  • 167 clinicians in this Medicare group
NPI 1194826404 (916) 481-0777

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

Other Providers at the Same Location NPPES 6

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

SARAH KRISTEN FOURNIER
Student in an Organized Health Care Education/Training Program
4150 V STREET, PSSB 1200
SACRAMENTO, CA 95817
Sacramento County (916) 734-5028
LUKE SPEIER DO
Student in an Organized Health Care Education/Training Program
4150 V STREET, PSSB 1200
SACRAMENTO, CA 95817
Sacramento County (805) 455-2204
CAMERON LEE CLERKLEY
Student in an Organized Health Care Education/Training Program
4150 V STREET, PSSB 1200
SACRAMENTO, CA 95817
Sacramento County (916) 734-5028
NICHOLAS BENJAMIN WHEELER BALARDI MD
Student in an Organized Health Care Education/Training Program
4150 V STREET, PSSB 1200
SACRAMENTO, CA 95817
Sacramento County (916) 734-5028
RITIKA JOHAL
Anesthesiology
4150 V STREET, PSSB 1200
SACRAMENTO, CA 95817
Sacramento County (916) 734-5028
MELISSA ANN ALLISON PEABODY
Student in an Organized Health Care Education/Training Program
4150 V STREET, PSSB 1200
SACRAMENTO, CA 95817
Sacramento County (916) 734-5028

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 Justin Hamman's NPI number?

The NPI number for Justin Hamman is 1245859818. It was assigned to this individual provider in the NPPES registry on April 13, 2020.

Where is Justin Hamman located?

Justin Hamman practices at 4150 V Street, Pssb 1200, Sacramento, CA 95817. The listed phone number is (916) 734-5028.

What is Justin Hamman's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Justin Hamman enrolled in Medicare?

Yes. Justin Hamman is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Justin Hamman's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Justin Hamman reassigns Medicare benefits to 2 organizations: Regents Of The Univ Of Ca (Sacramento, CA) and Central Anesthesia Service Exchange Medical Group, Inc. (Sacramento, CA). Each 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 Justin Hamman'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 Justin Hamman was last updated on July 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.