Physician Profile
Fiona M. Gaunay, M.D.
Unclaimed ProfileAbout Dr. Gaunay
Fiona M. Gaunay, M.D. practices colon & rectal surgery in Lancaster, PA. Fiona is a 2011 graduate of Jefferson Medical College of Thomas Jefferson University. Fiona is also listed as specializing in surgery. According to Medicare claims data, Fiona cared for 205 Medicare patients across 214 services. The services billed most often include new patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more, diagnostic exam of anus using an endoscope, and visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient'.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (717) 544-3626
- Email not available
Practice Locations
2104 HARRISBURG PIKE STE 200
Lancaster, PA 17601
350 E 17th St 16 Baird Hall
New York, NY 10003
Procedures Most Often Billed to Medicare
214 services · 205 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Diagnostic exam of anus using an endoscope | Procedure | 46600 |
29 | As often as other peers in Colon & Rectal Surgery |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
30 | More often than most peers in Colon & Rectal Surgery |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
21 | As often as other peers in Colon & Rectal Surgery |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
20 | As often as other peers in Colon & Rectal Surgery |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
19 | As often as other peers in Colon & Rectal Surgery |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
19 | Less often than most peers in Colon & Rectal Surgery |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
17 | As often as other peers in Colon & Rectal Surgery |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
17 | Less often than most peers in Colon & Rectal Surgery |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
15 | Less often than most peers in Colon & Rectal Surgery |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
15 | Less often than most peers in Colon & Rectal Surgery |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Trained at Jefferson Medical College of Thomas Jefferson University 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 2011 at Jefferson Medical College of Thomas Jefferson University 8
Providers who graduated from the same medical school in the same year.
Also performs Diagnostic exam of anus using an endoscope 8
Providers in PA who bill this service to Medicare most often.
Common questions
What does Fiona M. Gaunay specialize in?
Fiona M. Gaunay is a colorectal surgeon in Lancaster, PA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Colon & Rectal Surgery”.
NPI registry
Where is Fiona M. Gaunay located?
Fiona M. Gaunay is listed at 2104 Harrisburg Pike Ste 200, Lancaster, PA 17601. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Fiona M. Gaunay's phone number?
The number on file is (717) 544-3626. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Fiona M. Gaunay's NPI number?
Fiona M. Gaunay's National Provider Identifier is 1083904528. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Fiona M. Gaunay train?
Fiona M. Gaunay attended Jefferson Medical College of Thomas Jefferson University, graduating in 2011. This comes from the CMS National Downloadable File.
CMS public data
How long has Fiona M. Gaunay been practicing?
Fiona M. Gaunay has 15 years experience. Calculated from a graduation year of 2011, reported in the CMS National Downloadable File.
CMS public data
What does Fiona M. Gaunay do most often?
According to Medicare billing data, Fiona M. Gaunay performs procedures including diagnostic exam of anus using an endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Fiona M. Gaunay confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Fiona M. Gaunay. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.