2026 NPPES data Medical Physician Assistant NPI 1578514758 PAC
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EMILY COMSTOCK, PAC

Medical Physician Assistant in GREAT FALLS, Montana. 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
10K
Medicare Part D claims · 518 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
87.2607/100
▲ 4 pts above national avg 83.1 · [object Object]
Industry payments
$382.26
19 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: EMILY COMSTOCK, PAC is a Medical Physician Assistant ([object Object]) practicing in GREAT FALLS, Montana with a Medicare Part D prescribing footprint of 10K claims across 518 beneficiaries — 12% brand-name prescribing . Their CMS MIPS Final Score of 87.2607/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $382.26 across 19 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: EMILY COMSTOCK, PAC reported a CMS MIPS final score of 87.2607 out of 100, above the 83.1 national average, and filed 9,730 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

EMILY COMSTOCK, PAC at a glance

High performer (top quartile)

NPI registry status

Active

Issued 05/13/2006

NPI 1578514758

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

9,730 803% vs specialty avg

2023 prescription claims

Specialty avg: 1,077

MIPS final score

87.2607/100 4.160700000000006% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Montana

How Medical Physician Assistant compares to other specialties among Montana providers

Montana providers

Medical Physician Assistant share within Montana

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

Medicare quality performance — MIPS

EMILY COMSTOCK, PAC's 2023 MIPS final score plotted against the Medical Physician Assistant national average

High performer (top quartile)
MIPS Final Score
87.2607/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Medical Physician Assistant) — 87.2607/100 vs national avg 83.1

0%100%National avg83%87.3%
MIPS final score (Medical Physician Assistant) — 87.2607/100 vs national avg 83.1

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).

EMILY COMSTOCK, PAC is a Medical Physician Assistant provider practicing in GREAT FALLS, Montana, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PAC. NPI: 1578514758. 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.

EMILY COMSTOCK, PAC appears in the CMS NPPES registry as a Medical Physician Assistant provider holding PAC credentials at 1400 29TH STREET SOUTH, GREAT FALLS, MT, 59405, with a listed phone of (406) 454-2171. NPI 1578514758 was issued on 05/13/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what COMSTOCK 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 9,730 prescription claims written by this provider, covering 518 Medicare beneficiaries and totaling roughly $1.2 million in drug spend, split 12% brand-name and 88% generic by claim count, with an opioid prescribing rate of 4.3%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 87.2607/100 for the 2023 performance year (Quality 82.973), compared with the national average of 83.1.

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

1400 29TH STREET SOUTH
GREAT FALLS, MT 59405

Provider Details

NPI 1578514758
Specialty Medical Physician Assistant
Credentials PAC
Gender Female
NPI Issued 05/13/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

87.2607
Final Score
Avg: 83.1
82.973
Quality
85.9138
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where EMILY COMSTOCK, PAC 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.

GREAT FALLS CLINIC LLC
GREAT FALLS, MT

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 EMILY COMSTOCK, PAC. Source: openpaymentsdata.cms.gov.

Total received

$382

Largest payer

ABBVIE 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.

Brand vs generic prescribing mix · Typical

EMILY COMSTOCK, PAC — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 9,730 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.

9,730
Total Claims
$1.2M
Total Drug Cost
518
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
19,653
Total Day Supply
561,753
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$1.1M
Generic Drug Cost
$148K
Opioid Claims
419 (4.3% rate)
Antibiotic Claims
146

Patient Demographics

Average Patient Age
74.4 years
Avg HCC Risk Score
0.95
Gender Split
75% female / 25% male
Age Distribution
<65: 43, 65-74: 221, 75-84: 177, 85+: 77

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Levothyroxine Sodium
580
Amlodipine Besylate
403
Atorvastatin Calcium
382
Losartan Potassium
296
Omeprazole
271
Lisinopril
228
Rosuvastatin Calcium
227
Metoprolol Succinate
224
Simvastatin
198
Gabapentin
177

* 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 EMILY COMSTOCK, PAC 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

EMILY COMSTOCK, PAC's 9,730 claims are above the specialty average of 1,077.

Nearby Medical Physician Assistant Providers in Montana

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

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

Frequently Asked Questions

What is EMILY COMSTOCK, PAC's specialty?
EMILY COMSTOCK, PAC specializes in Medical Physician Assistant and practices in GREAT FALLS, Montana. Credentials: PAC.
How much does EMILY COMSTOCK, PAC prescribe under Medicare Part D?
In 2023, EMILY COMSTOCK, PAC wrote 9,730 Medicare Part D claims totaling $1.2M in drug costs for 518 beneficiaries.
What is EMILY COMSTOCK, PAC's Medicare quality score?
EMILY COMSTOCK, PAC has a CMS MIPS Final Score of 87.2607/100 (Quality: 82.973). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is EMILY COMSTOCK, PAC located?
EMILY COMSTOCK, PAC is located at 1400 29TH STREET SOUTH, GREAT FALLS, MT, 59405. Phone: (406) 454-2171.
What is EMILY COMSTOCK, PAC's NPI number?
EMILY COMSTOCK, PAC's National Provider Identifier (NPI) is 1578514758, issued on 05/13/2006.
Does EMILY COMSTOCK, PAC prescribe more brand-name or generic drugs?
EMILY COMSTOCK, PAC's prescribing is 12% brand-name and 88% generic drugs by claim count, with $1.1M in brand drug costs.
Does EMILY COMSTOCK, PAC prescribe opioids?
Yes, EMILY COMSTOCK, PAC had 419 opioid claims in 2023 with an opioid prescribing rate of 4.3%.
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 EMILY COMSTOCK, PAC prescribe most often?
Based on 2023 Medicare Part D data, EMILY COMSTOCK, PAC's most frequently prescribed drugs include Levothyroxine Sodium, Amlodipine Besylate, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does EMILY COMSTOCK, PAC accept Medicare?
EMILY COMSTOCK, PAC appears in CMS Medicare data with 9,730 Part D claims and 518 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify EMILY COMSTOCK, PAC's credentials?
EMILY COMSTOCK, PAC's NPI is 1578514758 with credentials PAC. 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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