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Edit this profileAt a glance
- 200 Front St, Vestal, NY 13850
About Mary O'brien
Mary A. O'Brien, FNP is a nurse practitioner practicing in Vestal, NY. Mary is also listed as specializing in registered nurse. According to Medicare claims data, Mary cared for 238 Medicare patients across 240 services. The services billed most often include new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more. This provider record is associated with NPI 1821176264.
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
- (607) 658-1003
- Email not available
Practice Locations
200 FRONT ST
Vestal, NY 13850
Procedures Most Often Billed to Medicare
240 services · 238 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
65 | More often than most peers in Nurse Practitioner |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
56 | As often as other peers in Nurse Practitioner |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
30 | Less often than most peers in Nurse Practitioner |
| Detection test by multiplex amplified probe technique for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (covid-19) and influenza virus types a and b | Lab test | 87636 |
30 | As often as other peers in Nurse Practitioner |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
23 | As often as other peers in Nurse Practitioner |
| Automated urinalysis test | Lab test | 81003 |
19 | Less often than most peers in Nurse Practitioner |
| Detection test by nucleic acid for strep (streptococcus, group a), amplified probe technique | Lab test | 87651 |
17 | As often as other peers in Nurse Practitioner |
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.
Other nurse practitioners in Vestal 8
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2004 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Mary A. O'Brien?
Mary A. O'Brien is a nurse practitioner in Vestal, NY. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Mary A. O'Brien's address?
Mary A. O'Brien is listed at 200 Front St, Vestal, NY 13850. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Mary A. O'Brien?
The number on file is (607) 658-1003. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Mary A. O'Brien's NPI number?
Mary A. O'Brien's National Provider Identifier is 1821176264. 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 Mary A. O'Brien train?
Mary A. O'Brien attended Other, graduating in 2004. This comes from the CMS National Downloadable File.
CMS public data
How long has Mary A. O'Brien been practicing?
Mary A. O'Brien has 22 years experience. Calculated from a graduation year of 2004, reported in the CMS National Downloadable File.
CMS public data
What procedures does Mary A. O'Brien perform?
According to Medicare billing data, Mary A. O'Brien 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
Has Mary A. O'Brien confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Mary A. O'Brien. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.