GREGORY P GUYTON MD
NPI 1386688570
Orthopaedic Surgery - Foot and Ankle Surgery in Baltimore, MD
About Gregory P Guyton Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREGORY P GUYTON MD (NPI 1386688570) is an individual foot and ankle surgery provider in Baltimore, Maryland, licensed in Maryland (D0059372) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Medstar Union Memorial Hospital, and is a graduate of Harvard Medical School (1993).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 7
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
Gregory P Guyton 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 Reassignment
Medicare enrollment records show Gregory Guyton reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Baltimore, MD 21239
- Reassigned Medicare billing, Maryland enrollment
- 2,602 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 13
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.
Medstar Union Memorial Hospital
Acute Care Hospitals · Baltimore, MDMedicare 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 2
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.
BALTIMORE, MD 21218
BALTIMORE, MD 21218
BALTIMORE, MD 21218
BALTIMORE, MD 21218
BALTIMORE, MD 21218
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 Gregory Guyton's NPI number?
The NPI number for Gregory Guyton is 1386688570. It was assigned to this individual provider in the NPPES registry on June 16, 2006.
Where is Gregory Guyton located?
Gregory Guyton practices at 3333 N Calvert St Ste 400, Baltimore, MD 21218. The listed phone number is (410) 554-6844.
What is Gregory Guyton's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Foot and Ankle Surgery, with taxonomy code 207XX0004X.
Is Gregory Guyton enrolled in Medicare?
Yes. Gregory Guyton 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 Gregory Guyton's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Guyton reassigns Medicare benefits to Medstar Medical Group II LLC (Baltimore, MD). 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 Gregory Guyton's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Gregory Guyton affiliated with any hospitals?
According to CMS data, Gregory Guyton is affiliated with Medstar Union Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Gregory Guyton was last updated on March 8, 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.
# Gregory P Guyton, MD · NPI 1386688570
Foot and Ankle Surgery physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since June 16, 2006.
## Identity
- **NPI:** 1386688570 (Entity type: Individual)
- **Enumerated:** June 16, 2006
- **Primary specialty:** Orthopaedic Surgery - Foot and Ankle Surgery · taxonomy 207XX0004X
- **State license:** D0059372 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 3333 N CALVERT ST, STE 400, Baltimore, MD 21218
- **Phone:** (410) 554-6844 · **Fax:** (410) 554-4326
## 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:** Medstar Medical Group II LLC (NPI 1184046187, Baltimore, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Harvard Medical School, class of 1993
## Record status
- **NPPES last updated:** March 8, 2017
- **Other identifiers:** Other 61674501 (MD); Medicare UPIN G98608; Medicare PIN 112N (MD); and 4 more
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Source: [NPI Profile](https://npiprofile.com/npi/1386688570) · Data from the CMS NPPES public registry.