LONG T. NGUYEN M.D.
NPI 1811956006
Internal Medicine in Oklahoma City, OK
About Long T. Nguyen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LONG T. NGUYEN M.D. (NPI 1811956006) is an individual internal medicine provider in Oklahoma City, Oklahoma, licensed in Oklahoma (20102) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Ssm Health St Anthony Hospital - Oklahoma City, and is a graduate of University Of Oklahoma College Of Medicine (1995).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 4
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
Long T. Nguyen 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
4Medicare enrollment records show Long Nguyen reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oklahoma City, OK 73118
- Reassigned Medicare billing, Oklahoma enrollment
- 30 clinicians in this Medicare group
Oklahoma City, OK 73118
- Reassigned Medicare billing, Oklahoma enrollment
- 33 clinicians in this Medicare group
Oklahoma City, OK 73134
- Reassigned Medicare billing, Oklahoma enrollment
- 1,058 clinicians in this Medicare group
Chandler, OK 74834
- Reassigned Medicare billing, Oklahoma enrollment
- 17 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 11
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.
Ssm Health St Anthony Hospital - Oklahoma City
Acute Care Hospitals · Oklahoma City, OKPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 73112 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 3
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.
OKLAHOMA CITY, OK 73112
OKLAHOMA CITY, OK 73112
OKLAHOMA CITY, OK 73112
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 Long Nguyen's NPI number?
The NPI number for Long Nguyen is 1811956006. It was assigned to this individual provider in the NPPES registry on March 17, 2006.
Where is Long Nguyen located?
Long Nguyen practices at 3300 NW Expressway, Oklahoma City, OK 73112. The listed phone number is (405) 713-7403.
What is Long Nguyen's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Long Nguyen enrolled in Medicare?
Yes. Long Nguyen 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 Long Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Long Nguyen reassigns Medicare benefits to 4 organizations: Transitional Care Organization LLC (Oklahoma City, OK), Allied Wound Care Specialist PLLC (Oklahoma City, OK), Integris Ambulatory Care Corporation (Oklahoma City, OK) and Best Physicians At Home, Inc (Chandler, OK). 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 Long Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Long Nguyen accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 1 other insurer list Long Nguyen 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.
Is Long Nguyen affiliated with any hospitals?
According to CMS data, Long Nguyen is affiliated with Ssm Health St Anthony Hospital - Oklahoma City.
When was this NPI record last updated?
The NPPES record for Long Nguyen was last updated on July 20, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Long T. Nguyen, M.D. · NPI 1811956006
Internal Medicine physician in Oklahoma City, Oklahoma. Individual provider, active in the CMS NPPES registry since March 17, 2006.
## Identity
- **NPI:** 1811956006 (Entity type: Individual)
- **Enumerated:** March 17, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 20102 (Oklahoma)
- **Sole proprietor:** No
## Practice location
- **Address:** 3300 NW EXPRESSWAY, Oklahoma City, OK 73112-4418
- **Phone:** (405) 713-7403 · **Fax:** (405) 713-2794
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Transitional Care Organization LLC (NPI 1861150211, Oklahoma City, OK); Allied Wound Care Specialist PLLC (NPI 1497361273, Oklahoma City, OK); Integris Ambulatory Care Corporation (NPI 1750333936, Oklahoma City, OK); Best Physicians At Home, Inc (NPI 1447659768, Chandler, OK) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Oklahoma College Of Medicine, class of 1995
## Record status
- **NPPES last updated:** July 20, 2017
- **Other identifiers:** Medicare PIN 241423407 (OK); Medicaid 100132200A (OK); Medicare UPIN G46163; and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1811956006) · Data from the CMS NPPES public registry.