NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1295714657 MD
Verify on CMS → Catherine Hegarty, MD
Endocrinology, Diabetes & Metabolism Physician in Springfield, 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 8,078 in Endocrinology, Diabetes & Metabolism Physician, 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
3K
Medicare Part D claims · 560 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
39%
generic claims · 50% 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
Catherine Hegarty, MD filed 3,171 Medicare Part D claims in 2024 as an Endocrinology, Diabetes & Metabolism Physician in Springfield, Massachusetts, prescribing 39% generic.
- 3K
- Part D claims, 2024
- 39%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥89th
- 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 Catherine Hegarty, MD
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 1295714657), first enumerated 01/13/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 3,171 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- 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 Catherine Hegarty, MD'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.
Compare Hegarty with other Endocrinology, Diabetes & Metabolism Physician providers
Same primary specialty, same federal CMS NPPES roster.
Also enrolled in Massachusetts
- Dr. Alice Abbott, MD Leeds, MA
- Dr. Adham Abdel Mottalib, MD Boston, MA
- Dr. Martin Abrahamson, M.D. Boston, MA
- Dr. Ana Paula Abreu Metzger, M.D., PHD Boston, MA
- Gail Adler, MD PHD Boston, MA
- Alexandra Albert, MD PHD Worcester, MA
Other specialties in Springfield: Counselor (1,415) · Mental Health Counselor (908) · Student in an Organized Health Care Education/Training Program (643) · Clinical Social Worker (602)
CMS NPPES provider registry desk
NPI 1295714657 · Endocrinology, Diabetes & Metabolism Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1295714657
- ENUM-LEGACY 2006
- TAX-MID 8K Endocrinology, Diabetes
- RX-MID 3,171
- BOOK-THIN 373 in Massachusetts
- PHOTO-ENUM Lillian Harstine, MD · 2006
Catherine Hegarty, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
3,171 ≥ 89th percentile 89% 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
✓
Board certification likely (heuristic, not verified)
Catherine Hegarty, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Catherine Hegarty, MD?
Quality data not reportedPrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
3,171 16% vs specialty avg
Specialty distribution in Massachusetts
How Endocrinology, Diabetes & Metabolism Physician 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 Endocrinology, Diabetes & Metabolism Physician. 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 | 1295714657 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 01/13/2006 |
Hospital and facility affiliations
Facilities where Catherine Hegarty, MD 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.
Mass General Brigham Medical Group Western Massachusetts Inc
Northampton, 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 Catherine Hegarty, MD. To verify Catherine Hegarty, MD'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 · Brand-heavy
Catherine Hegarty, MD - brand share 50.0%
Endocrinology, Diabetes & Metabolism Physician average
50% brand-name claims vs 39% generic, on 3,171 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.
3,171
Total Claims
$1.7M
Total Drug Cost
560
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 7,392.6
- Total Day Supply
- 219,404
- Brand vs Generic
- 50% brand / 39% generic
- Brand Drug Cost
- $1.6M
- Generic Drug Cost
- $28K
Patient Demographics
- Average Patient Age
- 72.2 years
- Avg HCC Risk Score
- 1.31
- Gender Split
- 69% female / 31% male
- Age Distribution
- <65: 68, 65-74: 274, 75-84: 177, 85+: 41
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Catherine Hegarty, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Levothyroxine Sodium
Levothyroxine Sodium
456 claims
- Synthroid
Synthroid
201 claims
- Ozempic 150
Ozempic
150 claims
- Lantus Solostar 143
Lantus Solostar
143 claims
- Metformin Hcl Er 140
Metformin Hcl Er
140 claims
- Mounjaro 139
Mounjaro
139 claims
- Alendronate Sodium 127
Alendronate Sodium
127 claims
- Metformin Hcl 109
Metformin Hcl
109 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 456 |
| Synthroid Levothyroxine Sodium | 201 |
| Ozempic Semaglutide | 150 |
| Lantus Solostar Insulin Glargine,hum.Rec.Anlog | 143 |
| Metformin Hcl Er Metformin Hcl | 140 |
| Mounjaro Tirzepatide | 139 |
| Alendronate Sodium | 127 |
| Metformin Hcl | 109 |
| Novolog Flexpen Insulin Aspart | 104 |
| Trulicity Dulaglutide | 94 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Endocrinology, Diabetes & Metabolism Physician in MA →
All providers in Massachusetts →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Catherine Hegarty, MD fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
8,078
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,739
Avg Claims per Provider
Catherine Hegarty, MD's 3,171 claims are above the specialty average of 2,739.
Nationwide Endocrinology, Diabetes & Metabolism Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Hegarty, 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 Endocrinology, Diabetes & Metabolism Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Hegarty.
One of 373 Endocrinology, Diabetes & Metabolism Physician providers enrolled in Massachusetts, 11 are shown on this page.
Dr. Erik Alexander
MD
Boston, MA
Dr. Sara Alexanian
MD
Boston, MA
Dr. Asem Ali
MD / MBBS
Boston, MA
Dr. Saud Alzahrani
M.D.
Lowell, MA
Dr. Amy Anderson
DO
Fall River, MA
Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Catherine Hegarty, MD's specialty? ▼
Catherine Hegarty, MD specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Springfield, Massachusetts. Credentials: MD.
How much does Catherine Hegarty, MD prescribe under Medicare Part D? ▼
In 2024, Catherine Hegarty, MD wrote 3,171 Medicare Part D claims totaling $1.7M in drug costs for 560 beneficiaries.
Where is Catherine Hegarty, MD located? ▼
Catherine Hegarty, MD is located at 2150 MAIN STREET, Springfield, MA, 01104. Phone: (413) 739-5676.
What is Catherine Hegarty, MD's NPI number? ▼
Catherine Hegarty, MD's National Provider Identifier (NPI) is 1295714657, issued on 01/13/2006.
Does Catherine Hegarty, MD prescribe more brand-name or generic drugs? ▼
Catherine Hegarty, MD's prescribing is 50% brand-name and 39% generic drugs by claim count, with $1.6M in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 8,078 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,739 Medicare Part D claims per year.
What drugs does Catherine Hegarty, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Catherine Hegarty, MD's most frequently prescribed drugs include Levothyroxine Sodium, Synthroid, Ozempic. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Catherine Hegarty, MD accept Medicare? ▼
Catherine Hegarty, MD appears in CMS Medicare data with 3,171 Part D claims and 560 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Catherine Hegarty, MD's credentials? ▼
Catherine Hegarty, MD's NPI is 1295714657 with credentials MD. 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.