Physician Profile
Unclaimed ProfileAbout NASH
Garrett Michael Nash, M.D. practices colorectal surgery (proctology) in New York, NY. Garrett is a 1998 graduate of Columbia University College of Physicians and Surgeons. Garrett is also listed as specializing in colon & rectal surgery. Medicare claims data shows Garrett provided 134 services to 113 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (212) 639-2000
- Email not available
Practice Locations
1275 YORK AVE MSKCC, COLORECTAL SURGERY SERVICE
New York, NY 10065
Procedures Most Often Billed to Medicare
134 services · 113 patients · 5 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
43 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
37 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
27 |
| 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 |
16 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
11 |
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.
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.
Other colorectal surgery specialists in New York 8
Same specialty, same city.
Trained at Columbia University College of Physicians and Surgeons 6
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 1998 at Columbia University College of Physicians and Surgeons 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Dr. Nash specialize in?
Dr. Nash is a colorectal surgery (proctology) in New York, NY. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “COLORECTAL SURGERY (PROCTOLOGY)”.
NPI registry
Where is Dr. Nash located?
Dr. Nash is listed at 1275 YORK AVE MSKCC, COLORECTAL SURGERY SERVICE, New York, NY 10065. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Nash's phone number?
The number on file is (212) 639-2000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Nash?
Dr. Nash's National Provider Identifier is 1154581213. 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 Dr. Nash go to medical school?
Dr. Nash attended Columbia University College of Physicians and Surgeons, graduating in 1998. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Nash have?
Dr. Nash has 28 years experience. Calculated from a graduation year of 1998, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Nash do most often?
According to Medicare billing data, Dr. Nash the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Nash's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Nash. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.