DR. ROBERT W CHALMERS M.D.
NPI 1114973708
Obstetrics & Gynecology in Nampa, ID
About Dr. Robert W Chalmers M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ROBERT W CHALMERS M.D. (NPI 1114973708) is an individual obstetrics & gynecology provider in Nampa, Idaho, licensed in Idaho (5771332) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, maintains 4 additional practice locations, and is a graduate of Other (1999).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 4
Other Identifiers 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. Robert W Chalmers 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
17Medicare enrollment records show Robert Chalmers reassigns Medicare billing to 17 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Caldwell, ID 83605
- Reassigned Medicare billing, Idaho enrollment
- 781 clinicians in this Medicare group
Boise, ID 83712
- Reassigned Medicare billing, Idaho enrollment
- 1,312 clinicians in this Medicare group
Tremonton, UT 84337
- Reassigned Medicare billing, Utah enrollment
- 3,691 clinicians in this Medicare group
Ogden, UT 84403
- Reassigned Medicare billing, Utah enrollment
- 126 clinicians in this Medicare group
Salt Lake City, UT 84124
- Reassigned Medicare billing, Utah enrollment
- 12 clinicians in this Medicare group
Riverton, UT 84065
- Reassigned Medicare billing, Utah enrollment
- 9 clinicians in this Medicare group
Tacoma, WA 98405
- Reassigned Medicare billing, Washington enrollment
- 1,526 clinicians in this Medicare group
Seattle, WA 98104
- Reassigned Medicare billing, Washington enrollment
- 129 clinicians in this Medicare group
Carmel, CA 93923
- Reassigned Medicare billing, California enrollment
- 155 clinicians in this Medicare group
San Diego, CA 92123
- Reassigned Medicare billing, California enrollment
- 1,437 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 83687 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NAMPA, ID 83687
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 Robert Chalmers's NPI number?
The NPI number for Robert Chalmers is 1114973708. It was assigned to this individual provider in the NPPES registry on May 25, 2006.
Where is Robert Chalmers located?
Robert Chalmers practices at 9850 W St Lukes Dr, Nampa, ID 83687. The listed phone number is (208) 381-2267.
What is Robert Chalmers's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Robert Chalmers enrolled in Medicare?
Yes. Robert Chalmers 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 Robert Chalmers's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Robert Chalmers reassigns Medicare benefits to 17 organizations: Saint Alphonsus Regional Medical Center Inc (Caldwell, ID), St Lukes Clinic-Treasure Valley LLC (Boise, ID), Ihc Health Services Inc (Tremonton, UT), Ogden Clinic Specialty Services LLC (Ogden, UT), Obhg Utah LLC (Salt Lake City, UT) and 12 more organizations, listed in the Medicare section above. 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 Robert Chalmers's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Robert Chalmers accept?
Health plans from Moda Health Plan, Inc., Premera Blue Cross Blue Shield of Alaska and University of Utah Health Plans list Robert Chalmers 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 Robert Chalmers was last updated on October 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Dr. Robert W Chalmers, M.D. · NPI 1114973708
Obstetrics & Gynecology physician in Nampa, Idaho. Individual provider, active in the CMS NPPES registry since May 25, 2006.
## Identity
- **NPI:** 1114973708 (Entity type: Individual)
- **Enumerated:** May 25, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 5771332 (Idaho)
- **Sole proprietor:** No
## Practice location
- **Address:** 9850 W ST LUKES DR, Nampa, ID 83687-7912
- **Phone:** (208) 381-2267 · **Fax:** (208) 381-4314
## 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:** 17 organizations under Medicare reassignment (form CMS-855R): Saint Alphonsus Regional Medical Center Inc (NPI 1861676298, Caldwell, ID); St Lukes Clinic-Treasure Valley LLC (NPI 1326336058, Boise, ID); Ihc Health Services Inc (NPI 1184082141, Tremonton, UT); Ogden Clinic Specialty Services LLC (NPI 1114203668, Ogden, UT); Obhg Utah LLC (NPI 1457667727, Salt Lake City, UT); and 12 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1999
## Record status
- **NPPES last updated:** October 22, 2025
- **Other identifiers:** Medicaid 1014444 (AK)
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Source: [NPI Profile](https://npiprofile.com/npi/1114973708) · Data from the CMS NPPES public registry.