HAROLD T. ROWSON MD
NPI 1164407698
Anesthesiology in Upper Marlboro, MD
About Harold T. Rowson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HAROLD T. ROWSON MD (NPI 1164407698) is an individual anesthesiology provider in Upper Marlboro, Maryland, licensed in Maryland (D40908) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Temple University School Of Medicine (1985).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
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
Harold T. Rowson Md 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
2Medicare enrollment records show Harold Rowson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hollywood, MD 20636
- Reassigned Medicare billing, Maryland enrollment
- 307 clinicians in this Medicare group
Great Mills, MD 20634
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
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 4
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.
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.
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 Harold Rowson's NPI number?
The NPI number for Harold Rowson is 1164407698. It was assigned to this individual provider in the NPPES registry on December 7, 2005.
Where is Harold Rowson located?
Harold Rowson practices at 5714 Kenfield Ln, Upper Marlboro, MD 20772. The listed phone number is (301) 325-3558.
What is Harold Rowson's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Harold Rowson enrolled in Medicare?
Yes. Harold Rowson 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 Harold Rowson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Harold Rowson reassigns Medicare benefits to 2 organizations: Medstar Medical Group - Southern Maryland LLC (Hollywood, MD) and Harold T Rowson , Inc (Great Mills, MD). 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 Harold Rowson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Harold Rowson was last updated on December 14, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Harold T. Rowson, MD · NPI 1164407698
Anesthesiology physician in Upper Marlboro, Maryland. Individual provider, active in the CMS NPPES registry since December 7, 2005.
## Identity
- **NPI:** 1164407698 (Entity type: Individual)
- **Enumerated:** December 7, 2005
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** D40908 (Maryland)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 5714 KENFIELD LN, Upper Marlboro, MD 20772-3943
- **Phone:** (301) 325-3558
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Medstar Medical Group - Southern Maryland LLC (NPI 1831592211, Hollywood, MD); Harold T Rowson , Inc (NPI 1043704729, Great Mills, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Temple University School Of Medicine, class of 1985
## Record status
- **NPPES last updated:** December 14, 2021
- **Other identifiers:** Medicaid 555721600 (MD)
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Source: [NPI Profile](https://npiprofile.com/npi/1164407698) · Data from the CMS NPPES public registry.