DR. JAMES A. MCCARTAN D.O.
NPI 1851388441
Hospitalist in Houston, TX
About Dr. James A. Mccartan D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JAMES A. MCCARTAN D.O. (NPI 1851388441) is an individual hospitalist provider in Houston, Texas, licensed in Texas (R8052) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS, is affiliated with Houston Methodist Hospital, and maintains 11 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 11
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. James A. Mccartan D.o. 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 Reassignment
Medicare enrollment records show James Mccartan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Sugar Land, TX 77479
- Reassigned Medicare billing, Texas enrollment
- 72 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.
Houston Methodist Hospital
Acute Care Hospitals · Houston, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77058 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.
HOUSTON, TX 77058
HOUSTON, TX 77058
HOUSTON, TX 77058
HOUSTON, TX 77058
HOUSTON, TX 77058
HOUSTON, TX 77058
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 James Mccartan's NPI number?
The NPI number for James Mccartan is 1851388441. It was assigned to this individual provider in the NPPES registry on September 29, 2005.
Where is James Mccartan located?
James Mccartan practices at 18333 Egret Bay Blvd Ste 140, Houston, TX 77058. The listed phone number is (281) 332-3001.
What is James Mccartan's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is James Mccartan enrolled in Medicare?
Yes. James Mccartan 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 organization bills Medicare for James Mccartan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Mccartan reassigns Medicare benefits to Houston In Patient Physician Associates PLLC (Sugar Land, TX). The 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 James Mccartan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does James Mccartan accept?
Health plans from Blue Cross and Blue Shield of Texas list James Mccartan 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 James Mccartan affiliated with any hospitals?
According to CMS data, James Mccartan is affiliated with Houston Methodist Hospital.
When was this NPI record last updated?
The NPPES record for James Mccartan was last updated on October 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 days 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. James A. Mccartan, D.O. · NPI 1851388441
Hospitalist physician in Houston, Texas. Individual provider, active in the CMS NPPES registry since September 29, 2005.
## Identity
- **NPI:** 1851388441 (Entity type: Individual)
- **Enumerated:** September 29, 2005
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** R8052 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 18333 EGRET BAY BLVD STE 140, Houston, TX 77058-3239
- **Phone:** (281) 332-3001
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** Houston In Patient Physician Associates PLLC (NPI 1871892646, Sugar Land, TX), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1993
## Record status
- **NPPES last updated:** October 20, 2026
- **Other identifiers:** Other 14QR1 (FL)
---
Source: [NPI Profile](https://npiprofile.com/npi/1851388441) · Data from the CMS NPPES public registry.