2026 NPPES data Medical Physician Assistant NPI 1649532177 PA-C
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DIANA KING, PA-C

Medical Physician Assistant in WESTWOOD, 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
191
Medicare Part D claims · 143 beneficiaries · Medical Physician Assistant avg: 1K

What the federal data shows

DIANA KING, PA-C filed 191 Medicare Part D claims in 2023 as a Medical Physician Assistant in WESTWOOD, Massachusetts.

191
Part D claims, 2023

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.

DIANA KING, PA-C's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

191 35th percentile higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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

What does the federal data show about DIANA KING, PA-C?

Quality data not reported

NPI registry status

Active

Issued 06/11/2012

NPI 1649532177

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

191 82% vs specialty avg

2023 prescription claims

Specialty avg: 1,077

Specialty distribution in Massachusetts

How Medical Physician Assistant compares to other specialties among Massachusetts providers

Massachusetts providers

Medical Physician Assistant share within Massachusetts

1. Medical Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Medical Physician Assistant share within Massachusetts

Specialty board-certification context

Estimated specialty board-certified rate — Medical Physician Assistant (ABMS / AOA reference)

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

Est. board-certified rate (Medical Physician Assistant) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Medical Physician Assistant) — 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).

DIANA KING, PA-C appears in the CMS NPPES registry as a Medical Physician Assistant provider holding PA-C credentials at 211 UNIVERSITY AVE, WESTWOOD, MA, 02090, with a listed phone of (781) 776-4094. NPI 1649532177 was issued on 06/11/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KING 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 191 prescription claims written by this provider, covering 143 Medicare beneficiaries and totaling roughly $5K 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.

Medical Physician Assistant is a mid-sized specialty nationwide, with 40,527 enrolled providers across 55 states and an average of 1,077 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

211 UNIVERSITY AVE
WESTWOOD, MA 02090

Provider Details

NPI 1649532177
Specialty Medical Physician Assistant
Credentials PA-C
Gender Female
NPI Issued 06/11/2012

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 DIANA KING, PA-C. To verify DIANA KING, PA-C'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.

191
Total Claims
$5K
Total Drug Cost
143
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
191
Total Day Supply
2,165
Generic Drug Cost
$2K
Antibiotic Claims
87

Patient Demographics

Average Patient Age
67.1 years
Avg HCC Risk Score
1.34
Gender Split
56% female / 44% male
Age Distribution
<65: 41, 65-74: 61, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What DIANA KING, PA-C prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Cephalexin
21
Doxycycline Hyclate
19
Cyclobenzaprine Hcl
18
Prednisone
13

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Medical Physician Assistant Overview

How DIANA KING, PA-C fits within the Medical Physician Assistant landscape nationally.

40,527
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,077
Avg Claims per Provider

DIANA KING, PA-C's 191 claims are below the specialty average of 1,077.

Nearby Medical Physician Assistant Providers in Massachusetts

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

Compare Medical Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is DIANA KING, PA-C's specialty?
DIANA KING, PA-C specializes in Medical Physician Assistant and practices in WESTWOOD, Massachusetts. Credentials: PA-C.
How much does DIANA KING, PA-C prescribe under Medicare Part D?
In 2023, DIANA KING, PA-C wrote 191 Medicare Part D claims totaling $5K in drug costs for 143 beneficiaries.
Where is DIANA KING, PA-C located?
DIANA KING, PA-C is located at 211 UNIVERSITY AVE, WESTWOOD, MA, 02090. Phone: (781) 776-4094.
What is DIANA KING, PA-C's NPI number?
DIANA KING, PA-C's National Provider Identifier (NPI) is 1649532177, issued on 06/11/2012.
How many Medical Physician Assistant providers are there in the US?
There are 40,527 Medical Physician Assistant providers across 55 states in the US. The average Medical Physician Assistant provider writes 1,077 Medicare Part D claims per year.
What drugs does DIANA KING, PA-C prescribe most often?
Based on 2023 Medicare Part D data, DIANA KING, PA-C's most frequently prescribed drugs include Cephalexin, Doxycycline Hyclate, Cyclobenzaprine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DIANA KING, PA-C accept Medicare?
DIANA KING, PA-C appears in CMS Medicare data with 191 Part D claims and 143 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DIANA KING, PA-C's credentials?
DIANA KING, PA-C's NPI is 1649532177 with credentials PA-C. 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