NPI registry status
Active
2026 NPPES data Obstetrics & Gynecology Physician NPI 1891720934 M.D.
Verify on CMS → Brenda Hallenbeck, M.D.
Obstetrics & Gynecology Physician in Worcester, 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 45,074 in Obstetrics & Gynecology 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
14
Medicare Part D claims · Obstetrics & Gynecology Physician avg: 188
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Brenda Hallenbeck, M.D. filed 14 Medicare Part D claims in 2024 as an Obstetrics & Gynecology Physician in Worcester, Massachusetts.
- 14
- Part D claims, 2024
- ≥0th
- 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 Brenda Hallenbeck, M.D.
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 1891720934), first enumerated 07/11/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 14 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
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- State context
State board disciplinary context
Massachusetts statewide board action statistics are published annually — these figures describe aggregate state activity, not Brenda Hallenbeck, M.D.'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 1891720934 · Obstetrics & Gynecology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-TRACE · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1891720934
- ENUM-LEGACY 2006
- TAX-MID 45K Obstetrics &
- RX-TRACE 14
- BOOK-LIGHT 1,130 in Massachusetts
- PHOTO-ENUM Margaret Rempe · 2006
Brenda Hallenbeck, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
14 ≥ 0th percentile 0% 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-eligible specialty (heuristic, not verified)
Brenda Hallenbeck, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Brenda Hallenbeck, M.D.?
Quality data not reportedPrimary specialty
Obstetrics & Gynecology Physician
Medicare Part D claims
14 93% vs specialty avg
Specialty distribution in Massachusetts
How Obstetrics & Gynecology 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 Obstetrics & Gynecology 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 | 1891720934 |
|---|---|
| Specialty | Obstetrics & Gynecology Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 07/11/2006 |
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 Brenda Hallenbeck, M.D.. To verify Brenda Hallenbeck, M.D.'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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
14
Total Claims
$1K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 26.5
- Total Day Supply
- 795
- Brand Drug Cost
- $0
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 68.5 years
- Avg HCC Risk Score
- 0.63
More Obstetrics & Gynecology Physician in MA →
All providers in Massachusetts →
Compare specialties →
Obstetrics & Gynecology Physician Overview
How Brenda Hallenbeck, M.D. fits within the Obstetrics & Gynecology Physician landscape nationally.
45,074
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
188
Avg Claims per Provider
Brenda Hallenbeck, M.D.'s 14 claims are below the specialty average of 188.
Nationwide Obstetrics & Gynecology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Hallenbeck, 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 Obstetrics & Gynecology Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Hallenbeck.
One of 1,130 Obstetrics & Gynecology Physician providers enrolled in Massachusetts, 5 are shown here.
Dr. Jodi Abbott
MD
Boston, MA
Mary Kathryn Abel
AB
Boston, MA
Dr. Marie Elise Abi Antoun
MD
Boston, MA
Dr. Ashley Ackerman
MD
Brookline, MA
Dr. Christina Acocella
M.D.
Framingham, MA
Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Brenda Hallenbeck, M.D.'s specialty? ▼
Brenda Hallenbeck, M.D. specializes in Obstetrics & Gynecology Physician and practices in Worcester, Massachusetts. Credentials: M.D..
How much does Brenda Hallenbeck, M.D. prescribe under Medicare Part D? ▼
In 2024, Brenda Hallenbeck, M.D. wrote 14 Medicare Part D claims totaling $1K in drug costs for N/A beneficiaries.
Where is Brenda Hallenbeck, M.D. located? ▼
Brenda Hallenbeck, M.D. is located at 140 W BOYLSTON DR, Worcester, MA, 01606. Phone: (508) 853-6662.
What is Brenda Hallenbeck, M.D.'s NPI number? ▼
Brenda Hallenbeck, M.D.'s National Provider Identifier (NPI) is 1891720934, issued on 07/11/2006.
How many Obstetrics & Gynecology Physician providers are there in the US? ▼
There are 45,074 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 188 Medicare Part D claims per year.
Does Brenda Hallenbeck, M.D. accept Medicare? ▼
Brenda Hallenbeck, M.D. appears in CMS Medicare data with 14 Part D claims and N/A Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Brenda Hallenbeck, M.D.'s credentials? ▼
Brenda Hallenbeck, M.D.'s NPI is 1891720934 with credentials M.D.. 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.