NPI registry status
Active
2026 NPPES data Gynecology Physician NPI 1740347798 HD
Verify on CMS → Carolyn Shaak, HD
Gynecology Physician in Needham, 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 3,906 in 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
1K
Medicare Part D claims · 411 beneficiaries · Gynecology Physician avg: 295
Generic prescribing
51%
generic claims · 38% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$13.08
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Carolyn Shaak, HD filed 1,298 Medicare Part D claims in 2023 as a Gynecology Physician in Needham, Massachusetts, prescribing 51% generic.
- 1K
- Part D claims, 2023
- 51%
- generic prescribing
- $13.08
- industry payments (Sunshine Act)
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.
Carolyn Shaak, HD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,298 Top 22% higher than 78% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Carolyn Shaak, HD 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 Carolyn Shaak, HD?
Quality data not reportedPrimary specialty
Gynecology Physician
Medicare Part D claims
1,298 340% vs specialty avg
Specialty distribution in Massachusetts
How 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 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).
Carolyn Shaak, HD appears in the CMS NPPES registry as a Gynecology Physician provider holding HD credentials at 405 GREAT PLAIN AVENUE, Needham, MA, 02492, with a listed phone of (781) 453-2927. NPI 1740347798 was issued on 01/02/2007.
Medicare Part D records for calendar year 2023 show 1,298 prescription claims written by this provider, covering 411 Medicare beneficiaries and totaling roughly $120K in drug spend, split 38% brand-name and 51% generic by claim count.
Gynecology Physician is a narrow specialty nationwide, with 3,906 enrolled providers across 53 states and an average of 295 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1740347798 |
|---|---|
| Specialty | Gynecology Physician |
| Credentials | HD |
| Gender | Female |
| NPI Issued | 01/02/2007 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Carolyn Shaak, HD. Source: openpaymentsdata.cms.gov.
Total received
$13
Largest payer
Exact Sciences Corporation
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
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 Carolyn Shaak, HD. To verify Carolyn Shaak, HD'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 · Above average
Carolyn Shaak, HD - brand share 38.0%
Gynecology Physician average
38% brand-name claims vs 51% generic, on 1,298 2023 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 2023.
1,298
Total Claims
$120K
Total Drug Cost
411
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,771
- Total Day Supply
- 74,111
- Brand vs Generic
- 38% brand / 51% generic
- Brand Drug Cost
- $69K
- Generic Drug Cost
- $36K
- Antibiotic Claims
- 28
Patient Demographics
- Average Patient Age
- 73.5 years
- Avg HCC Risk Score
- 0.78
- Gender Split
- 78% female / 22% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Carolyn Shaak, HD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
204 claims
- Shingrix
Shingrix
178 claims
- Liothyronine Sodium
Liothyronine Sodium
174 claims
- Estradiol (Twice W…
Estradiol (Twice Weekly)
113 claims
- Synthroid 52
Synthroid
52 claims
- Estradiol 32
Estradiol
32 claims
- Terconazole 25
Terconazole
25 claims
- Dotti 24
Dotti
24 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 204 |
| Shingrix Varicella-Zoster Ge/As01b/Pf | 178 |
| Liothyronine Sodium | 174 |
| Estradiol (Twice Weekly) Estradiol | 113 |
| Synthroid Levothyroxine Sodium | 52 |
| Estradiol | 32 |
| Terconazole | 25 |
| Dotti Estradiol | 24 |
| Lorazepam | 17 |
| Estradiol (Once Weekly) Estradiol | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gynecology Physician Overview
How Carolyn Shaak, HD fits within the Gynecology Physician landscape nationally.
3,906
Gynecology Physician Providers in US
53
States with Gynecology Physician
295
Avg Claims per Provider
Carolyn Shaak, HD's 1,298 claims are above the specialty average of 295.
Nearby Gynecology Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Shaak.
Dr. Richard Abisla
MD
Falmouth, MA
Dr. Alan Altman
M.D.
Brookline, MA
Dr. Rachel Ashby
MD
Boston, MA
Dr. Deborah Bartz
M.D.
Roxbury Crossing, MA
Dr. Laurel Bauer
MD
Beverly, MA
Compare Gynecology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Massachusetts medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Gynecology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Carolyn Shaak, HD's specialty? ▼
Carolyn Shaak, HD specializes in Gynecology Physician and practices in Needham, Massachusetts. Credentials: HD.
How much does Carolyn Shaak, HD prescribe under Medicare Part D? ▼
In 2023, Carolyn Shaak, HD wrote 1,298 Medicare Part D claims totaling $120K in drug costs for 411 beneficiaries.
Where is Carolyn Shaak, HD located? ▼
Carolyn Shaak, HD is located at 405 GREAT PLAIN AVENUE, Needham, MA, 02492. Phone: (781) 453-2927.
What is Carolyn Shaak, HD's NPI number? ▼
Carolyn Shaak, HD's National Provider Identifier (NPI) is 1740347798, issued on 01/02/2007.
Does Carolyn Shaak, HD prescribe more brand-name or generic drugs? ▼
Carolyn Shaak, HD's prescribing is 38% brand-name and 51% generic drugs by claim count, with $69K in brand drug costs.
How many Gynecology Physician providers are there in the US? ▼
There are 3,906 Gynecology Physician providers across 53 states in the US. The average Gynecology Physician provider writes 295 Medicare Part D claims per year.
What drugs does Carolyn Shaak, HD prescribe most often? ▼
Based on 2023 Medicare Part D data, Carolyn Shaak, HD's most frequently prescribed drugs include Levothyroxine Sodium, Shingrix, Liothyronine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Carolyn Shaak, HD accept Medicare? ▼
Carolyn Shaak, HD appears in CMS Medicare data with 1,298 Part D claims and 411 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Carolyn Shaak, HD's credentials? ▼
Carolyn Shaak, HD's NPI is 1740347798 with credentials HD. 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 (2023). 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 April 2026 (NPPES) / 2023 (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
Compiled from official public sources by the PlainDoctor editorial team.
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 May 2026.