ROBERT STEPHEN MAKAR MD PHD
NPI 1174536338
Pathology - Blood Banking & Transfusion Medicine in Houston, TX
About Robert Stephen Makar Md Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ROBERT STEPHEN MAKAR MD PHD (NPI 1174536338) is an individual blood banking & transfusion medicine provider in Houston, Texas, licensed in Texas (W3569) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of Other (2000).
NPPES Registry Identity
Specialties & Licenses
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
Robert Stephen Makar Md Phd 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
3Medicare enrollment records show Robert Makar reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 2,675 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 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
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.
Massachusetts General Hospital
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77030 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 8
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 Robert Makar's NPI number?
The NPI number for Robert Makar is 1174536338. It was assigned to this individual provider in the NPPES registry on August 15, 2006.
Where is Robert Makar located?
Robert Makar practices at 1515 Holcombe, Houston, TX 77030. The listed phone number is (713) 792-6161.
What is Robert Makar's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Blood Banking & Transfusion Medicine, with taxonomy code 207ZB0001X.
Is Robert Makar enrolled in Medicare?
Yes. Robert Makar 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 Makar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Robert Makar reassigns Medicare benefits to 3 organizations: Physicians Referral Service (Houston, TX), The General Hospital Corporation (Boston, MA) and Massachusetts General Physicians Organization Inc (Boston, MA). 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 Makar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Robert Makar affiliated with any hospitals?
According to CMS data, Robert Makar is affiliated with Massachusetts General Hospital.
When was this NPI record last updated?
The NPPES record for Robert Makar was last updated on July 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Robert Stephen Makar, MD PHD · NPI 1174536338
Blood Banking & Transfusion Medicine physician in Houston, Texas. Individual provider, active in the CMS NPPES registry since August 15, 2006.
## Identity
- **NPI:** 1174536338 (Entity type: Individual)
- **Enumerated:** August 15, 2006
- **Primary specialty:** Pathology - Blood Banking & Transfusion Medicine · taxonomy 207ZB0001X
- **State license:** W3569 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 1515 HOLCOMBE, Houston, TX 77030-4000
- **Phone:** (713) 792-6161
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Physicians Referral Service (NPI 1073574810, Houston, TX); The General Hospital Corporation (NPI 1023049236, Boston, MA); Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2000
## Record status
- **NPPES last updated:** July 14, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1174536338) · Data from the CMS NPPES public registry.