2026 NPPES data Hospice and Palliative Medicine (Internal Medicine) Physician NPI 1851534192 M.D.
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MARGARET MULLIN, M.D.

Hospice and Palliative Medicine (Internal Medicine) Physician in PUYALLUP, Washington. 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
77
Medicare Part D claims · 35 beneficiaries · Hospice and Palliative Medicine (Internal Medicine) Physician avg: 1K
What the federal data reveals: MARGARET MULLIN, M.D. is a Hospice and Palliative Medicine (Internal Medicine) Physician ([object Object]) practicing in PUYALLUP, Washington with a Medicare Part D prescribing footprint of 77 claims across 35 beneficiaries .

What stands out: MARGARET MULLIN, M.D. filed 77 Medicare Part D claims in 2023 across PUYALLUP, Washington. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

MARGARET MULLIN, 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).

MARGARET MULLIN, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 04/16/2009

NPI 1851534192

Primary specialty

Hospice and Palliative Medicine (Internal Medicine) Physician

Niche

1,524 US NPIs in this specialty

Medicare Part D claims

77 94% vs specialty avg

2023 prescription claims

Specialty avg: 1,275

Specialty distribution in Washington

How Hospice and Palliative Medicine (Internal Medicine) Physician compares to other specialties among Washington providers

Washington providers

Hospice and Palliative Medicine (Internal Medicine) Physician share within Washington

1. Hospice and Palliative Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hospice and Palliative Medicine (Internal Medicine) Physician share within Washington

Specialty board-certification context

Estimated specialty board-certified rate — Hospice and Palliative Medicine (Internal Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Hospice and Palliative Medicine (Internal Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Hospice and Palliative Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Hospice and Palliative Medicine (Internal Medicine) Physician) — 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).

MARGARET MULLIN, M.D. is a Hospice and Palliative Medicine (Internal Medicine) Physician provider practicing in PUYALLUP, Washington, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1851534192. 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.

MARGARET MULLIN, M.D. appears in the CMS NPPES registry as a Hospice and Palliative Medicine (Internal Medicine) Physician provider holding M.D. credentials at 401 15TH AVE SE, PUYALLUP, WA, 98372, with a listed phone of (253) 403-4532. NPI 1851534192 was issued on 04/16/2009. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MULLIN 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 77 prescription claims written by this provider, covering 35 Medicare beneficiaries and totaling roughly $2K in drug spend, with an opioid prescribing rate of 55.8%. 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.

Hospice and Palliative Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 1,524 enrolled providers across 51 states and an average of 1,275 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

401 15TH AVE SE
PUYALLUP, WA 98372

Provider Details

NPI 1851534192
Specialty Hospice and Palliative Medicine (Internal Medicine) Physician
Credentials M.D.
Gender Female
NPI Issued 04/16/2009

License & disciplinary context — Washington WMC 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 ~34K Washington medical licensees in 2023 — they are NOT specific to MARGARET MULLIN, M.D.. To verify MARGARET MULLIN, M.D.'s current license status, search the WMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

88
Total board actions, Washington 2023
Across 85 cases
2.59
Actions per 1,000 licensees
Washington statewide rate
probation
Most common action type
31 cases

WMC 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 Washington 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.

77
Total Claims
$2K
Total Drug Cost
35
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
77
Total Day Supply
1,203
Generic Drug Cost
$2K
Opioid Claims
43 (55.8% rate)

Patient Demographics

Average Patient Age
71.9 years
Avg HCC Risk Score
2.38
Gender Split
51% female / 49% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Oxycodone Hcl
24

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

Hospice and Palliative Medicine (Internal Medicine) Physician Overview

How MARGARET MULLIN, M.D. fits within the Hospice and Palliative Medicine (Internal Medicine) Physician landscape nationally.

1,524
Hospice and Palliative Medicine (Internal Medicine) Physician Providers in US
51
States with Hospice and Palliative Medicine (Internal Medicine) Physician
1,275
Avg Claims per Provider

MARGARET MULLIN, M.D.'s 77 claims are below the specialty average of 1,275.

Nearby Hospice and Palliative Medicine (Internal Medicine) Physician Providers in Washington

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

Compare Hospice and Palliative Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MARGARET MULLIN, M.D.'s specialty?
MARGARET MULLIN, M.D. specializes in Hospice and Palliative Medicine (Internal Medicine) Physician and practices in PUYALLUP, Washington. Credentials: M.D..
How much does MARGARET MULLIN, M.D. prescribe under Medicare Part D?
In 2023, MARGARET MULLIN, M.D. wrote 77 Medicare Part D claims totaling $2K in drug costs for 35 beneficiaries.
Where is MARGARET MULLIN, M.D. located?
MARGARET MULLIN, M.D. is located at 401 15TH AVE SE, PUYALLUP, WA, 98372. Phone: (253) 403-4532.
What is MARGARET MULLIN, M.D.'s NPI number?
MARGARET MULLIN, M.D.'s National Provider Identifier (NPI) is 1851534192, issued on 04/16/2009.
Does MARGARET MULLIN, M.D. prescribe opioids?
Yes, MARGARET MULLIN, M.D. had 43 opioid claims in 2023 with an opioid prescribing rate of 55.8%.
How many Hospice and Palliative Medicine (Internal Medicine) Physician providers are there in the US?
There are 1,524 Hospice and Palliative Medicine (Internal Medicine) Physician providers across 51 states in the US. The average Hospice and Palliative Medicine (Internal Medicine) Physician provider writes 1,275 Medicare Part D claims per year.
What drugs does MARGARET MULLIN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, MARGARET MULLIN, M.D.'s most frequently prescribed drugs include Oxycodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARGARET MULLIN, M.D. accept Medicare?
MARGARET MULLIN, M.D. appears in CMS Medicare data with 77 Part D claims and 35 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARGARET MULLIN, M.D.'s credentials?
MARGARET MULLIN, M.D.'s NPI is 1851534192 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

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