Provider Profile
Erin Underhill, PA
Unclaimed ProfileAbout Erin Underhill
Erin Underhill, PA is a physician assistant practicing in Dobbs Ferry, NY. According to Medicare claims data, Erin cared for 129 Medicare patients across 752 services. The services billed most often include injection, methylprednisolone acetate, 1 mg, aspiration and/or injection of fluid large joint using ultrasound guidance, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more.
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
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
- (914) 693-6500
- Email not available
Practice Locations
128 ASHFORD AVE FL 2
Dobbs Ferry, NY 10522
73 Market St
Yonkers, NY 10710
Procedures Most Often Billed to Medicare
752 services · 129 patients · 6 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Aspiration and/or injection of fluid large joint using ultrasound guidance | Procedure | 20611 |
40 | As often as other peers in Physician Assistant |
| Injection, methylprednisolone acetate, 1 mg | Drug given | J1010 |
611 | Less often than most peers in Physician Assistant |
| Hyaluronan or derivative, orthovisc, for intra-articular injection, per dose | Drug given | J7324 |
34 | Less often than most peers in Physician Assistant |
| Injection, methylprednisolone acetate, 40 mg | Drug given | J1030 |
12 | Less often than most peers in Physician Assistant |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
36 | Less often than most peers in Physician Assistant |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
19 | Less often than most peers in Physician Assistant |
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 physician assistants at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
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.
More connections — 30 related providers in 4 groups
Other physician assistants in Dobbs Ferry 6
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2013 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Aspiration and/or injection of fluid large joint using ultrasound guidance 8
Providers in NY who bill this service to Medicare most often.
Common questions
What does Erin Underhill specialize in?
Erin Underhill is a physician assistant in Dobbs Ferry, NY. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Erin Underhill located?
Erin Underhill is listed at 128 Ashford Ave Fl 2, Dobbs Ferry, NY 10522. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Erin Underhill's phone number?
The number on file is (914) 693-6500. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Erin Underhill's NPI number?
Erin Underhill's National Provider Identifier is 1841629318. 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 Erin Underhill train?
Erin Underhill attended Other, graduating in 2013. This comes from the CMS National Downloadable File.
CMS public data
How long has Erin Underhill been practicing?
Erin Underhill has 13 years experience. Calculated from a graduation year of 2013, reported in the CMS National Downloadable File.
CMS public data
What does Erin Underhill do most often?
According to Medicare billing data, Erin Underhill performs procedures including aspiration and/or injection of fluid large joint using ultrasound guidance, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Erin Underhill confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Erin Underhill. 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.