DR. I-WEN TSENG DO
NPI 1376613323
Emergency Medicine in Acoma, NM
About Dr. I-wen Tseng Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. I-WEN TSENG DO (NPI 1376613323) is an individual emergency medicine provider in Acoma, New Mexico, licensed in New Mexico (A146008) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, is affiliated with Cass Lake Indian Health Services Hospital, and maintains a secondary practice location in Temecula.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 1
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. I-wen Tseng Do 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
13Medicare enrollment records show I-wen Tseng reassigns Medicare billing to 13 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Grants, NM 87020
- Reassigned Medicare billing, New Mexico enrollment
- 123 clinicians in this Medicare group
Thoreau, NM 87323
- Reassigned Medicare billing, Texas enrollment
- Medicare enrollment name: Dhhs Phs Naihs Crownpoint Hospital
- 265 clinicians in this Medicare group
Albuquerque, NM 87106
- Reassigned Medicare billing, New Mexico enrollment
- 2,331 clinicians in this Medicare group
Cleveland, MS 38732
- Reassigned Medicare billing, Mississippi enrollment
- 32 clinicians in this Medicare group
Jackson, MS 39204
- Reassigned Medicare billing, Mississippi enrollment
- 187 clinicians in this Medicare group
Hazlehurst, MS 39083
- Reassigned Medicare billing, Mississippi enrollment
- 159 clinicians in this Medicare group
New Albany, MS 38652
- Reassigned Medicare billing, Mississippi enrollment
- 103 clinicians in this Medicare group
Starkville, MS 39759
- Reassigned Medicare billing, Mississippi enrollment
- 49 clinicians in this Medicare group
Cass Lake, MN 56633
- Reassigned Medicare billing, Texas enrollment
- 98 clinicians in this Medicare group
West Point, MS 39773
- Reassigned Medicare billing, Mississippi enrollment
- 103 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Cass Lake Indian Health Services Hospital
Critical Access Hospitals · Cass Lake, MNPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 87034 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
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.
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 I-wen Tseng's NPI number?
The NPI number for I-wen Tseng is 1376613323. It was assigned to this individual provider in the NPPES registry on November 8, 2006.
Where is I-wen Tseng located?
I-wen Tseng practices at 80 B Veterans Blvd, Acoma, NM 87034. The listed phone number is (505) 552-5300.
What is I-wen Tseng's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is I-wen Tseng enrolled in Medicare?
Yes. I-wen Tseng 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 I-wen Tseng's services?
According to the CMS Revalidation Reassignment List (October 2026 release), I-wen Tseng reassigns Medicare benefits to 13 organizations: Fedko Emergency Physicians New Mexico LLC (Grants, NM), Thoreau Clinic (Thoreau, NM), Presbyterian Healthcare Services (Albuquerque, NM), Acs Emergency Services Of Mississippi Professional Association (Cleveland, MS), App Of Mississippi Ed, LLC (Jackson, MS) and 8 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 I-wen Tseng's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is I-wen Tseng affiliated with any hospitals?
According to CMS data, I-wen Tseng is affiliated with Cass Lake Indian Health Services Hospital.
When was this NPI record last updated?
The NPPES record for I-wen Tseng was last updated on March 31, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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. I-Wen Tseng, DO · NPI 1376613323
Emergency Medicine physician in Acoma, New Mexico. Individual provider, active in the CMS NPPES registry since November 8, 2006.
## Identity
- **NPI:** 1376613323 (Entity type: Individual)
- **Enumerated:** November 8, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A146008 (New Mexico)
- **Sole proprietor:** No
## Practice location
- **Address:** 80 B VETERANS BLVD, Acoma, NM 87034
- **Phone:** (505) 552-5300 · **Fax:** (505) 552-5490
## 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:** 13 organizations under Medicare reassignment (form CMS-855R): Fedko Emergency Physicians New Mexico LLC (NPI 1770047441, Grants, NM); Thoreau Clinic (NPI 1679516702, Thoreau, NM); Presbyterian Healthcare Services (NPI 1215913470, Albuquerque, NM); Acs Emergency Services Of Mississippi Professional Association (NPI 1396996997, Cleveland, MS); App Of Mississippi Ed, LLC (NPI 1730687740, Jackson, MS); and 8 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1993
## Record status
- **NPPES last updated:** March 31, 2020
- **Other identifiers:** Medicaid H3451 (NM)
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Source: [NPI Profile](https://npiprofile.com/npi/1376613323) · Data from the CMS NPPES public registry.