DR. JOHN SPENCER M.D.
NPI 1548369937
Family Medicine in Sahuarita, AZ
About Dr. John Spencer M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN SPENCER M.D. (NPI 1548369937) is an individual family medicine provider in Sahuarita, Arizona, licensed in Arizona (46503) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1975).
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Accepted Insurance
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
Dr. John Spencer M.d. 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
3Medicare enrollment records show John Spencer reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Tucson, AZ 85704
- Reassigned Medicare billing, Arizona enrollment
- 296 clinicians in this Medicare group
Glendale, AZ 85306
- Reassigned Medicare billing, Arizona enrollment
- 251 clinicians in this Medicare group
Whittier, CA 90605
- Reassigned Medicare billing, Arizona enrollment
- 9 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 2
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 85629 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAHUARITA, AZ 85629
SAHUARITA, AZ 85629
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 John Spencer's NPI number?
The NPI number for John Spencer is 1548369937. It was assigned to this individual provider in the NPPES registry on September 21, 2006.
Where is John Spencer located?
John Spencer practices at 15920 S Rancho Sahuarita Blvd Ste 120, Sahuarita, AZ 85629. The listed phone number is (520) 575-1175.
What is John Spencer's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is John Spencer enrolled in Medicare?
Yes. John Spencer 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 John Spencer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Spencer reassigns Medicare benefits to 3 organizations: Northwest Allied Physicians LLC (Tucson, AZ), Summit Medical Group Arizona LLC (Glendale, AZ) and Access Primary Care Physicians, Inc. (Whittier, 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 John Spencer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Spencer accept?
Health plans from Blue Cross Blue Shield of Arizona list John Spencer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for John Spencer was last updated on January 27, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. John Spencer, M.D. · NPI 1548369937
Family Medicine physician in Sahuarita, Arizona. Individual provider, active in the CMS NPPES registry since September 21, 2006.
## Identity
- **NPI:** 1548369937 (Entity type: Individual)
- **Enumerated:** September 21, 2006
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 46503 (Arizona)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 15920 S RANCHO SAHUARITA BLVD STE 120, Sahuarita, AZ 85629-8013
- **Phone:** (520) 575-1175
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Northwest Allied Physicians LLC (NPI 1003833179, Tucson, AZ); Summit Medical Group Arizona LLC (NPI 1053810622, Glendale, AZ); Access Primary Care Physicians, Inc. (NPI 1750858510, Whittier, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1975
## Record status
- **NPPES last updated:** January 27, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1548369937) · Data from the CMS NPPES public registry.