Dr. Gregory P. Guyton, MD
Orthopedic Surgery (Orthopaedic Foot and Ankle Surgery Physician)
3333 N Calvert St, Ste 400
Baltimore, MD 21218
Who else practices at this address →
Baltimore city includes primary care (36% of residents) shortage areas. About shortage areas
- Medicare participating
At a glance
- Medical school
- Harvard Medical School (1993)
- Years since graduation
- 33
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 343
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 1993Medical school: Harvard Medical School
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Orthopaedic Foot and Ankle Surgery Physician primary
MD license D0059372 -
Orthopaedic Surgery Physician
MD license D59372
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Medstar Union Memorial Hospital Baltimore, MD
Medical groups
- Medstar Medical Group II LLC (3,767 clinicians)
- Agape Physical Therapy and Sports Rehabilitation LP (678 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 343
- Services billed
- 1,148
- Patients’ average age
- 71
| Service | Times | Patients |
|---|---|---|
| X-ray of foot, minimum of 3 views | 415 | 221 |
| Established patient office or other outpatient visit, 30-39 minutes | 121 | 101 |
| X-ray of ankle, minimum of 3 views | 117 | 85 |
| Established patient office or other outpatient visit, 20-29 minutes | 113 | 93 |
| Established patient office or other outpatient visit, 40-54 minutes | 51 | 47 |
| New patient office or other outpatient visit, 45-59 minutes | 45 | 45 |
| New patient office or other outpatient visit, 30-44 minutes | 40 | 40 |
| Correction of toe joint deformity | 37 | 17 |
| X-ray of ankle, 2 views | 37 | 34 |
| Incision or partial removal of foot bone (other than big toe) to straighten toe | 23 | 12 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Payments from drug and device companies
In 2025, 4 companies reported 12 payments worth $9,337 in total to this clinician.
| Exactech, Inc. | $7,878 |
|---|---|
| Advita Ortho, LLC | $875 |
| Arthrex, Inc. | $557 |
| Stryker Corporation | $27.25 |
| Consulting Fee | $7,461 |
|---|---|
| Travel and Lodging | $1,193 |
| Royalty or License | $557 |
| Food and Beverage | $126 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Exactech, Inc. Mar 1, 2025 | Consulting Fee VANTAGE · ORTHOPAEDIC | $4,086 |
| Exactech, Inc. Feb 28, 2025 | Travel and Lodging VANTAGE · ORTHOPAEDIC · travel to ORLANDO, FL · in-kind | $1,193 |
| Exactech, Inc. May 28, 2025 | Consulting Fee | $1,000 |
| Advita Ortho, LLC Dec 18, 2025 | Consulting Fee VANTAGE · ORTHOPAEDIC | $875 |
| Exactech, Inc. Mar 25, 2025 | Consulting Fee VANTAGE · ORTHOPAEDIC | $750 |
| Exactech, Inc. Sep 23, 2025 | Consulting Fee VANTAGE · ORTHOPAEDIC | $750 |
| Arthrex, Inc. Feb 14, 2025 | Royalty or License Arthrex; Arthrex · Foot & Ankle and Trauma - Instruments - Foot & Ankle Fracture - Hindfoot & Ankle | $157 |
| Arthrex, Inc. Aug 15, 2025 | Royalty or License Arthrex; Arthrex · Foot & Ankle and Trauma - Instruments - Foot & Ankle Fracture - Hindfoot & Ankle | $155 |
| Arthrex, Inc. Nov 14, 2025 | Royalty or License Arthrex; Arthrex · Foot & Ankle and Trauma - Instruments - Foot & Ankle Fracture - Hindfoot & Ankle | $132 |
| Arthrex, Inc. May 15, 2025 | Royalty or License Arthrex; Arthrex · Foot & Ankle and Trauma - Instruments - Foot & Ankle Fracture - Hindfoot & Ankle | $113 |
Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.