Guy Guilfoy, MD
NPI 1154381341 · Orthopaedic Surgery Physician · Folsom, CA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Guy Guilfoy, MD is a Orthopaedic Surgery Physician provider in Folsom, CA (NPI 1154381341).
Provider details
- NPI number
- 1154381341
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G50096 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
589 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 232 | $134 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 94 | $93 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 66 | $70 |
| X-Ray of Knee, 1-2 Views73560 | 45 | $38 |
| Replacement of Knee Joint, Both Sides of Knee27447 | 26 | $1,257 |
| Computer-Assisted Surgery for Muscle and Bone Procedure20985 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Celecoxib | 74 | 45 |
| Tramadol Hcl | 63 | 53 |
| Gabapentin | 49 | 43 |
| Oxycodone Hcl | 44 | 40 |
| Meloxicam | 40 | 15 |
| Amoxicillin | 32 | 28 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 31 | 30 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$280 across 7 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-23
- Last updated
- 2012-03-28
Frequently asked questions
- What is Guy Guilfoy's NPI number?
- Guy Guilfoy's National Provider Identifier (NPI) is 1154381341, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guy Guilfoy's specialty?
- Guy Guilfoy is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Guy Guilfoy located?
- Guy Guilfoy's practice location on file with NPPES is 1743 Creekside Dr, Folsom, CA 95630-3541.
- What is Guy Guilfoy's phone number?
- The practice phone number listed in the NPPES registry for Guy Guilfoy is (916) 983-2307.
- Does Guy Guilfoy accept Medicare?
- Guy Guilfoy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Guy Guilfoy's NPI active?
- Yes — Guy Guilfoy's NPI (1154381341) is active in the NPPES registry as of the last update on 2012-03-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.