NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1174590103 PA
Verify on CMS → Ann Esrick, PA
Physician Assistant in Florence, Massachusetts.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 156,084 in Physician Assistant, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
4K
Medicare Part D claims · 450 beneficiaries · Physician Assistant avg: 832
Generic prescribing
86%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Ann Esrick, PA filed 4,188 Medicare Part D claims in 2024 as a Physician Assistant in Florence, Massachusetts, prescribing 86% generic.
- 4K
- Part D claims, 2024
- 86%
- generic prescribing
- ≥92nd
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Ann Esrick, PA
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1174590103), first enumerated 03/08/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 4,188 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Massachusetts statewide board action statistics are published annually — these figures describe aggregate state activity, not Ann Esrick, PA's individual license status. Verify directly with the state medical board.
Source: BORIM annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1174590103 · Physician Assistant
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1174590103
- ENUM-LEGACY 2006
- TAX-MEGA 156K Physician Assistant
- RX-MID 4,188
- BOOK-LIGHT 4,482 in Massachusetts
- PHOTO-ENUM Tasha Stone, PA-C · 2006
Ann Esrick, PA's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
4,188 ≥ 92nd percentile 92% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Ann Esrick, PA?
Quality data not reportedPrimary specialty
Physician Assistant
Medicare Part D claims
4,188 5× vs specialty avg
Specialty distribution in Massachusetts
How Physician Assistant compares to other specialties among Massachusetts providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Physician Assistant. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1174590103 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | PA |
| Gender | Female |
| NPI Issued | 03/08/2006 |
Hospital and facility affiliations
Facilities where Ann Esrick, PA bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Valley Medical Group PC
Greenfield, MA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Massachusetts BORIM 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~38K Massachusetts medical licensees in 2023 - they are NOT specific to Ann Esrick, PA. To verify Ann Esrick, PA's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Ann Esrick, PA - brand share 13.0%
Physician Assistant average
13% brand-name claims vs 86% generic, on 4,188 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
4,188
Total Claims
$403K
Total Drug Cost
450
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 9,088.767
- Total Day Supply
- 266,895
- Brand vs Generic
- 13% brand / 86% generic
- Brand Drug Cost
- $336K
- Generic Drug Cost
- $66K
- Opioid Claims
- 161 (3.8% rate)
- Antibiotic Claims
- 38
Patient Demographics
- Average Patient Age
- 73.7 years
- Avg HCC Risk Score
- 1.07
- Gender Split
- 74% female / 26% male
- Age Distribution
- <65: 39, 65-74: 208, 75-84: 139, 85+: 64
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Ann Esrick, PA prescribes most
Top Medicare Part D drugs by claim count, 2024
- Atorvastatin Calcium
Atorvastatin Calcium
329 claims
- Lisinopril
Lisinopril
291 claims
- Amlodipine Besylate
Amlodipine Besylate
238 claims
- Omeprazole
Omeprazole
218 claims
- Levothyroxine Sodium
Levothyroxine Sodium
185 claims
- Eliquis 126
Eliquis
126 claims
- Losartan Potassium 124
Losartan Potassium
124 claims
- Gabapentin 115
Gabapentin
115 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 329 |
| Lisinopril | 291 |
| Amlodipine Besylate | 238 |
| Omeprazole | 218 |
| Levothyroxine Sodium | 185 |
| Eliquis Apixaban | 126 |
| Losartan Potassium | 124 |
| Gabapentin | 115 |
| Tramadol Hcl | 92 |
| Ozempic Semaglutide | 91 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Ann Esrick, PA fits within the Physician Assistant landscape nationally.
156,084
Physician Assistant Providers in US
56
States with Physician Assistant
832
Avg Claims per Provider
Ann Esrick, PA's 4,188 claims are above the specialty average of 832.
Nationwide Physician Assistant peers with similar MIPS or enrollment year
Two federal-record peer sets for Esrick, both outside Massachusetts so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Physician Assistant Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Esrick.
One of 4,482 Physician Assistant providers enrolled in Massachusetts, 5 are shown here.
Erin Abdallah
PA-C
Swansea, MA
Alexa Aboshar
PA-C
Tewksbury, MA
Bhraana Abraham
PA
Boston, MA
Keidelyn Abreu
PA
Lawrence, MA
Tatiana Achildiev
PA
Worcester, MA
Compare Physician Assistant nationally: see state-by-state distribution →
Frequently Asked Questions
What is Ann Esrick, PA's specialty? ▼
Ann Esrick, PA specializes in Physician Assistant and practices in Florence, Massachusetts. Credentials: PA.
How much does Ann Esrick, PA prescribe under Medicare Part D? ▼
In 2024, Ann Esrick, PA wrote 4,188 Medicare Part D claims totaling $403K in drug costs for 450 beneficiaries.
Where is Ann Esrick, PA located? ▼
Ann Esrick, PA is located at 70 MAIN ST, Florence, MA, 01062. Phone: (413) 586-8400.
What is Ann Esrick, PA's NPI number? ▼
Ann Esrick, PA's National Provider Identifier (NPI) is 1174590103, issued on 03/08/2006.
Does Ann Esrick, PA prescribe more brand-name or generic drugs? ▼
Ann Esrick, PA's prescribing is 13% brand-name and 86% generic drugs by claim count, with $336K in brand drug costs.
Does Ann Esrick, PA prescribe opioids? ▼
Yes, Ann Esrick, PA had 161 opioid claims in 2024 with an opioid prescribing rate of 3.8%.
How many Physician Assistant providers are there in the US? ▼
There are 156,084 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 832 Medicare Part D claims per year.
What drugs does Ann Esrick, PA prescribe most often? ▼
Based on 2024 Medicare Part D data, Ann Esrick, PA's most frequently prescribed drugs include Atorvastatin Calcium, Lisinopril, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ann Esrick, PA accept Medicare? ▼
Ann Esrick, PA appears in CMS Medicare data with 4,188 Part D claims and 450 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ann Esrick, PA's credentials? ▼
Ann Esrick, PA's NPI is 1174590103 with credentials PA. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.