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Edit this profileWhere to find William T. Marshall, DO
- Valhalla location main office
100 Woods Rd # A, Valhalla, NY 10595 - Hartford location
1000 Asylum Ave, Suite 4320, Hartford, CT 06105
About Dr. Marshall
William T. Marshall, DO practices surgical critical care in Valhalla, NY. William is a 1999 graduate of New York College of Osteo Medicine of New York Institute of Technology. William is also listed as specializing in specialist and surgery. Medicare claims data shows William provided 251 services to 199 patients. The services billed most often include evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days, evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days, and programming of dual lead pacemaker system. The provider's National Provider Identifier (NPI) is 1174533061.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
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
- (914) 493-7000
- Email not available
Practice Locations
100 WOODS RD # A
Valhalla, NY 10595
1000 Asylum Ave Suite 4320
Hartford, CT 06105
Procedures Most Often Billed to Medicare
251 services · 199 patients · 6 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days | Treatment | 93294 |
80 | Too few peers to compare |
| Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days | Treatment | 93296 |
78 | Too few peers to compare |
| Programming of dual lead pacemaker system | Treatment | 93280 |
43 | Too few peers to compare |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
23 | As often as other peers in Surgical Critical Care |
| New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more | Office visit | 99202 |
14 | Too few peers to compare |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
13 | Less often than most peers in Surgical Critical Care |
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.
Other surgical critical cares at this location 2
Same specialty, same street address — most likely the same department or group.
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 surgical critical cares in Valhalla 6
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at New York College of Osteo Medicine of New York Institute of Technology 8
Other providers in the same specialty who trained at the same institution.
Class of 1999 at New York College of Osteo Medicine of New York Institute of Technology 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Dr. Marshall specialize in?
Dr. Marshall is a surgical critical care in Valhalla, NY. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dr. Marshall located?
Dr. Marshall is listed at 100 Woods Rd # A, Valhalla, NY 10595. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Marshall's phone number?
The number on file is (914) 493-7000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Marshall?
Dr. Marshall's National Provider Identifier is 1174533061. 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. Marshall go to medical school?
Dr. Marshall attended New York College of Osteo Medicine of New York Institute of Technology, graduating in 1999. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Marshall have?
Dr. Marshall has 27 years experience. Calculated from a graduation year of 1999, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Marshall do most often?
According to Medicare billing data, Dr. Marshall provides treatments such as evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days and evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Marshall's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Marshall. If this is you, claiming it is free.
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