JAMES HENRY HAMMOND MD
NPI 1023503653
Anesthesiology in Ann Arbor, MI
About James Henry Hammond Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JAMES HENRY HAMMOND MD (NPI 1023503653) is an individual anesthesiology provider in Ann Arbor, Michigan, licensed in Michigan (4301518584) and active in the NPI registry since June 2018. He is enrolled in Medicare PECOS, is affiliated with Ohsu Hospital And Clinics, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
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
James Henry Hammond 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.
Medicare Billing Reassignments
2Medicare enrollment records show James Hammond reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90048
- Reassigned Medicare billing, California enrollment
- 2,118 clinicians in this Medicare group
Portland, OR 97239
- Reassigned Medicare billing, Oregon enrollment
- 279 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ohsu Hospital And Clinics
Acute Care Hospitals · Portland, OROther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
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 James Hammond's NPI number?
The NPI number for James Hammond is 1023503653. It was assigned to this individual provider in the NPPES registry on June 26, 2018.
Where is James Hammond located?
James Hammond practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. The listed phone number is (734) 936-4000.
What is James Hammond's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is James Hammond enrolled in Medicare?
Yes. James Hammond 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 James Hammond's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Hammond reassigns Medicare benefits to 2 organizations: Cedars-Sinai Medical Care Foundation (Los Angeles, CA) and University Anesthesiology Associates, LLC (Portland, OR). 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 James Hammond's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is James Hammond affiliated with any hospitals?
According to CMS data, James Hammond is affiliated with Ohsu Hospital And Clinics.
When was this NPI record last updated?
The NPPES record for James Hammond was last updated on October 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days 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.
# James Henry Hammond, MD · NPI 1023503653
Anesthesiology physician in Ann Arbor, Michigan. Individual provider, active in the CMS NPPES registry since June 26, 2018.
## Identity
- **NPI:** 1023503653 (Entity type: Individual)
- **Enumerated:** June 26, 2018
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 4301518584 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1500 E MEDICAL CENTER DR, Ann Arbor, MI 48109-5000
- **Phone:** (734) 936-4000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Cedars-Sinai Medical Care Foundation (NPI 1316984388, Los Angeles, CA); University Anesthesiology Associates, LLC (NPI 1841217817, Portland, OR) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Michigan Medical School, class of 2018
## Record status
- **NPPES last updated:** October 21, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1023503653) · Data from the CMS NPPES public registry.