DR. STEFAN COSMIN BUCA M.D.
NPI 1417121799
Emergency Medicine in Marble Falls, TX
About Dr. Stefan Cosmin Buca M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. STEFAN COSMIN BUCA M.D. (NPI 1417121799) is an individual emergency medicine provider in Marble Falls, Texas, licensed in Texas (N8769) and active in the NPI registry since April 2008. He is enrolled in Medicare PECOS, is affiliated with Upper Connecticut Valley Hospital, and is a graduate of University Of Texas Southwestern Medical School At Dallas (2008).
NPPES Registry Identity
Specialties & Licenses
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. Stefan Cosmin Buca 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
6Medicare enrollment records show Stefan Buca reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fort Worth, TX 76104
- Reassigned Medicare billing, Texas enrollment
- 328 clinicians in this Medicare group
Dallas, TX 75246
- Reassigned Medicare billing, Texas enrollment
- 1,044 clinicians in this Medicare group
Alpine, TX 79830
- Reassigned Medicare billing, Texas enrollment
- 52 clinicians in this Medicare group
Littleton, NH 03561
- Reassigned Medicare billing, New Hampshire enrollment
- Also billed through NPI 1265536718 (New Hampshire)
- 126 clinicians in this Medicare group
Colebrook, NH 03576
- Reassigned Medicare billing, New Hampshire enrollment
- 63 clinicians in this Medicare group
Berlin, NH 03570
- Reassigned Medicare billing, New Hampshire enrollment
- Also billed through NPI 1386680593 (New Hampshire)
- 83 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 3
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Upper Connecticut Valley Hospital
Critical Access Hospitals · Colebrook, NHJps Health Network
Acute Care Hospitals · Fort Worth, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 78654 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.
MARBLE FALLS, TX 78654
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 Stefan Buca's NPI number?
The NPI number for Stefan Buca is 1417121799. It was assigned to this individual provider in the NPPES registry on April 17, 2008.
Where is Stefan Buca located?
Stefan Buca practices at 810 W Highway 71, Marble Falls, TX 78654. The listed phone number is (830) 201-8000.
What is Stefan Buca's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Stefan Buca enrolled in Medicare?
Yes. Stefan Buca 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 Stefan Buca's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stefan Buca reassigns Medicare benefits to 6 organizations: Integrative Emergency Services Physician Group PA (Fort Worth, TX), Century Integrated Partners, Inc (Dallas, TX), Brewster Emergency Medicine Associates PA (Alpine, TX), Weeks Medical Center (Littleton, NH), Upper Connecticut Valley Hospital Association (Colebrook, NH) and 1 more organization, 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 Stefan Buca's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Stefan Buca accept?
Health plans from Antidote Health of TX, Blue Cross and Blue Shield of Texas, CHRISTUS Health Plan, Oscar Health and Oscar Insurance Company list Stefan Buca 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 Stefan Buca affiliated with any hospitals?
According to CMS data, Stefan Buca is affiliated with Upper Connecticut Valley Hospital and Jps Health Network.
When was this NPI record last updated?
The NPPES record for Stefan Buca was last updated on May 24, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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. Stefan Cosmin Buca, M.D. · NPI 1417121799
Emergency Medicine physician in Marble Falls, Texas. Individual provider, active in the CMS NPPES registry since April 17, 2008.
## Identity
- **NPI:** 1417121799 (Entity type: Individual)
- **Enumerated:** April 17, 2008
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** N8769 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 810 W HIGHWAY 71, Marble Falls, TX 78654-8602
- **Phone:** (830) 201-8000
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Integrative Emergency Services Physician Group PA (NPI 1285922542, Fort Worth, TX); Century Integrated Partners, Inc (NPI 1447615711, Dallas, TX); Brewster Emergency Medicine Associates PA (NPI 1538218771, Alpine, TX); Weeks Medical Center (NPI 1578155560, Littleton, NH); Upper Connecticut Valley Hospital Association (NPI 1861489437, Colebrook, NH); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Texas Southwestern Medical School At Dallas, class of 2008
## Record status
- **NPPES last updated:** May 24, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1417121799) · Data from the CMS NPPES public registry.