2026 NPPES data Midwife NPI 1447592290 CNM
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LYNNE MASTERSON, CNM

Midwife in WORCESTER, Massachusetts. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
39
Medicare Part D claims · 19 beneficiaries · Midwife avg: 118
What the federal data reveals: LYNNE MASTERSON, CNM is a Midwife ([object Object]) practicing in WORCESTER, Massachusetts with a Medicare Part D prescribing footprint of 39 claims across 19 beneficiaries .

What stands out: LYNNE MASTERSON, CNM filed 39 Medicare Part D claims in 2023 across WORCESTER, Massachusetts. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

LYNNE MASTERSON, CNM at a glance

Quality data not reported

NPI registry status

Active

Issued 03/20/2013

NPI 1447592290

Primary specialty

Midwife

Mid-sized

5,918 US NPIs in this specialty

Medicare Part D claims

39 67% vs specialty avg

2023 prescription claims

Specialty avg: 118

Specialty distribution in Massachusetts

How Midwife compares to other specialties among Massachusetts providers

Massachusetts providers

Midwife share within Massachusetts

1. Midwife42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Midwife share within Massachusetts

Specialty board-certification context

Estimated specialty board-certified rate — Midwife (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Midwife ABMS/AOA estimate

Est. board-certified rate (Midwife) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Midwife) — ABMS / AOA estimate

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).

LYNNE MASTERSON, CNM is a Midwife provider practicing in WORCESTER, Massachusetts, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: CNM. NPI: 1447592290. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

LYNNE MASTERSON, CNM appears in the CMS NPPES registry as a Midwife provider holding CNM credentials at 123 SUMMER ST, WORCESTER, MA, 01608, with a listed phone of (508) 368-3110. NPI 1447592290 was issued on 03/20/2013. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MASTERSON most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 39 prescription claims written by this provider, covering 19 Medicare beneficiaries and totaling roughly $2K in drug spend. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Midwife is a mid-sized specialty nationwide, with 5,918 enrolled providers across 54 states and an average of 118 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

123 SUMMER ST
WORCESTER, MA 01608

Provider Details

NPI 1447592290
Specialty Midwife
Credentials CNM
Gender Female
NPI Issued 03/20/2013

Hospital and facility affiliations

Facilities where LYNNE MASTERSON, CNM 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.

COASTAL MEDICAL ASSOCIATES
WEYMOUTH, 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 LYNNE MASTERSON, CNM. To verify LYNNE MASTERSON, CNM'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 2023.

39
Total Claims
$2K
Total Drug Cost
19
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
48
Total Day Supply
1,253
Generic Drug Cost
$767

Patient Demographics

Average Patient Age
56.8 years
Avg HCC Risk Score
1.21
Gender Split
100% female / 0% male

Midwife Overview

How LYNNE MASTERSON, CNM fits within the Midwife landscape nationally.

5,918
Midwife Providers in US
54
States with Midwife
118
Avg Claims per Provider

LYNNE MASTERSON, CNM's 39 claims are below the specialty average of 118.

Nearby Midwife Providers in Massachusetts

Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as MASTERSON.

Compare Midwife nationally: see state-by-state distribution →

Frequently Asked Questions

What is LYNNE MASTERSON, CNM's specialty?
LYNNE MASTERSON, CNM specializes in Midwife and practices in WORCESTER, Massachusetts. Credentials: CNM.
How much does LYNNE MASTERSON, CNM prescribe under Medicare Part D?
In 2023, LYNNE MASTERSON, CNM wrote 39 Medicare Part D claims totaling $2K in drug costs for 19 beneficiaries.
Where is LYNNE MASTERSON, CNM located?
LYNNE MASTERSON, CNM is located at 123 SUMMER ST, WORCESTER, MA, 01608. Phone: (508) 368-3110.
What is LYNNE MASTERSON, CNM's NPI number?
LYNNE MASTERSON, CNM's National Provider Identifier (NPI) is 1447592290, issued on 03/20/2013.
How many Midwife providers are there in the US?
There are 5,918 Midwife providers across 54 states in the US. The average Midwife provider writes 118 Medicare Part D claims per year.
Does LYNNE MASTERSON, CNM accept Medicare?
LYNNE MASTERSON, CNM appears in CMS Medicare data with 39 Part D claims and 19 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify LYNNE MASTERSON, CNM's credentials?
LYNNE MASTERSON, CNM's NPI is 1447592290 with credentials CNM. 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

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