2026 NPPES data Medical Physician Assistant NPI 1942570973
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KATHERINE BLACKWELL

Medical Physician Assistant in PORT HURON, Michigan. 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
5K
Medicare Part D claims · 540 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$821.1
49 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

KATHERINE BLACKWELL filed 4,999 Medicare Part D claims in 2023 as a Medical Physician Assistant in PORT HURON, Michigan, prescribing 87% generic.

5K
Part D claims, 2023
87%
generic prescribing
$821.1
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.

KATHERINE BLACKWELL's Medicare Part D volume vs every U.S. prescriber

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

4,999 Top 6% higher than 94% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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 KATHERINE BLACKWELL?

Quality data not reported

NPI registry status

Active

Issued 01/06/2012

NPI 1942570973

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

4,999 364% vs specialty avg

2023 prescription claims

Specialty avg: 1,077

Specialty distribution in Michigan

How Medical Physician Assistant compares to other specialties among Michigan providers

Michigan providers

Medical Physician Assistant share within Michigan

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

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).

KATHERINE BLACKWELL appears in the CMS NPPES registry as a Medical Physician Assistant provider at 1209 10TH ST, PORT HURON, MI, 48060, with a listed phone of (810) 985-8170. NPI 1942570973 was issued on 01/06/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BLACKWELL 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 4,999 prescription claims written by this provider, covering 540 Medicare beneficiaries and totaling roughly $727K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 3.3%. 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

1209 10TH ST
PORT HURON, MI 48060

Provider Details

NPI 1942570973
Specialty Medical Physician Assistant
Gender Female
NPI Issued 01/06/2012

Hospital and facility affiliations

Facilities where KATHERINE BLACKWELL 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.

ST. CLAIR MEDICAL P.C
PORT HURON, MI

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

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 KATHERINE BLACKWELL. Source: openpaymentsdata.cms.gov.

Total received

$821

Largest payer

Novo Nordisk Inc

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 — Michigan MI-BOM 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 ~41K Michigan medical licensees in 2023 — they are NOT specific to KATHERINE BLACKWELL. To verify KATHERINE BLACKWELL's current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases

MI-BOM 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 Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

KATHERINE BLACKWELL — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 4,999 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.

4,999
Total Claims
$727K
Total Drug Cost
540
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
11,876
Total Day Supply
346,420
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$627K
Generic Drug Cost
$98K
Opioid Claims
164 (3.3% rate)
Antibiotic Claims
143

Patient Demographics

Average Patient Age
70.4 years
Avg HCC Risk Score
1.25
Gender Split
70% female / 30% male
Age Distribution
<65: 96, 65-74: 277, 75-84: 129, 85+: 38

Top Prescribed Drugs (Medicare Part D)

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

What KATHERINE BLACKWELL 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
Atorvastatin Calcium
302
Levothyroxine Sodium
208
Lisinopril
202
Amlodipine Besylate
131
Losartan Potassium
113
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
110
Metoprolol Succinate
105
Gabapentin
104
Omeprazole
101
Metformin Hcl
100

* 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 KATHERINE BLACKWELL 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

KATHERINE BLACKWELL's 4,999 claims are above the specialty average of 1,077.

Nearby Medical Physician Assistant Providers in Michigan

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

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

Frequently Asked Questions

What is KATHERINE BLACKWELL's specialty?
KATHERINE BLACKWELL specializes in Medical Physician Assistant and practices in PORT HURON, Michigan.
How much does KATHERINE BLACKWELL prescribe under Medicare Part D?
In 2023, KATHERINE BLACKWELL wrote 4,999 Medicare Part D claims totaling $727K in drug costs for 540 beneficiaries.
Where is KATHERINE BLACKWELL located?
KATHERINE BLACKWELL is located at 1209 10TH ST, PORT HURON, MI, 48060. Phone: (810) 985-8170.
What is KATHERINE BLACKWELL's NPI number?
KATHERINE BLACKWELL's National Provider Identifier (NPI) is 1942570973, issued on 01/06/2012.
Does KATHERINE BLACKWELL prescribe more brand-name or generic drugs?
KATHERINE BLACKWELL's prescribing is 13% brand-name and 87% generic drugs by claim count, with $627K in brand drug costs.
Does KATHERINE BLACKWELL prescribe opioids?
Yes, KATHERINE BLACKWELL had 164 opioid claims in 2023 with an opioid prescribing rate of 3.3%.
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 KATHERINE BLACKWELL prescribe most often?
Based on 2023 Medicare Part D data, KATHERINE BLACKWELL's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KATHERINE BLACKWELL accept Medicare?
KATHERINE BLACKWELL appears in CMS Medicare data with 4,999 Part D claims and 540 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KATHERINE BLACKWELL's credentials?
KATHERINE BLACKWELL's NPI is 1942570973. 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