2026 NPPES data Registered Nurse NPI 1356489272 NP
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MARY PORTER, NP

Registered Nurse in FLOWOOD, Mississippi. 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
2K
Medicare Part D claims · 298 beneficiaries · Registered Nurse avg: 1K
MIPS score
89.7644/100
▲ 7 pts above national avg 83.1 · [object Object]
Industry payments
$911.84
53 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

MARY PORTER, NP reported a CMS MIPS final score of 89.7644/100 — above the 83.1 national average — and filed 2,397 Medicare Part D claims in 2023.

89.7644/100
MIPS score · +7 vs avg
2K
Part D claims, 2023
$911.84
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.

MARY PORTER, NP's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

90 Top 42% higher than 58% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

What does the federal data show about MARY PORTER, NP?

High performer (top quartile)

NPI registry status

Active

Issued 02/02/2007

NPI 1356489272

Primary specialty

Registered Nurse

High-volume

175,652 US NPIs in this specialty

Medicare Part D claims

2,397 140% vs specialty avg

2023 prescription claims

Specialty avg: 1,000

MIPS final score

89.7644/100 6.6644000000000005% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Mississippi

How Registered Nurse compares to other specialties among Mississippi providers

Mississippi providers

Registered Nurse share within Mississippi

1. Registered Nurse42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Registered Nurse share within Mississippi

Medicare quality performance — MIPS

MARY PORTER, NP's 2023 MIPS final score plotted against the Registered Nurse national average

High performer (top quartile)
MIPS Final Score
89.7644/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Registered Nurse) — 89.7644/100 vs national avg 83.1

0%100%National avg83%89.8%
MIPS final score (Registered Nurse) — 89.7644/100 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).

MARY PORTER, NP appears in the CMS NPPES registry as a Registered Nurse provider holding NP credentials at 1020 RIVER OAKS DR STE 100, FLOWOOD, MS, 39232, with a listed phone of (601) 326-8700. NPI 1356489272 was issued on 02/02/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what PORTER 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 2,397 prescription claims written by this provider, covering 298 Medicare beneficiaries and totaling roughly $203K in drug spend, with an opioid prescribing rate of 1.3%. 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 89.7644/100 for the 2023 performance year (Quality 75.5999), compared with the national average of 83.1.

Registered Nurse is a high-volume specialty nationwide, with 175,652 enrolled providers across 56 states and an average of 1,000 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

1020 RIVER OAKS DR STE 100
FLOWOOD, MS 39232

Provider Details

NPI 1356489272
Specialty Registered Nurse
Credentials NP
Gender Female
NPI Issued 02/02/2007

CMS Quality Score (MIPS)

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

89.7644
Final Score
Avg: 83.1
75.5999
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where MARY PORTER, NP 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.

RIVER OAKS MANAGEMENT COMPANY LLC
MADISON, MS

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 MARY PORTER, NP. Source: openpaymentsdata.cms.gov.

Total received

$912

Largest payer

PFIZER 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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

2,397
Total Claims
$203K
Total Drug Cost
298
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,360
Total Day Supply
123,002
Generic Drug Cost
$44K
Opioid Claims
32 (1.3% rate)
Antibiotic Claims
142

Patient Demographics

Average Patient Age
71.1 years
Avg HCC Risk Score
1.18
Gender Split
76% female / 24% male
Age Distribution
<65: 37, 65-74: 162, 75-84: 79, 85+: 20

Top Prescribed Drugs (Medicare Part D)

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

What MARY PORTER, NP 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
105
Omeprazole
95
Alprazolam
65
Levothyroxine Sodium
64
Losartan Potassium
64
Amlodipine Besylate
63
Metformin Hcl
60
Lisinopril
59
Gabapentin
58
Metoprolol Succinate
52

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

Registered Nurse Overview

How MARY PORTER, NP fits within the Registered Nurse landscape nationally.

175,652
Registered Nurse Providers in US
56
States with Registered Nurse
1,000
Avg Claims per Provider

MARY PORTER, NP's 2,397 claims are above the specialty average of 1,000.

Nearby Registered Nurse Providers in Mississippi

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

Compare Registered Nurse nationally: see state-by-state distribution →

Frequently Asked Questions

What is MARY PORTER, NP's specialty?
MARY PORTER, NP specializes in Registered Nurse and practices in FLOWOOD, Mississippi. Credentials: NP.
How much does MARY PORTER, NP prescribe under Medicare Part D?
In 2023, MARY PORTER, NP wrote 2,397 Medicare Part D claims totaling $203K in drug costs for 298 beneficiaries.
What is MARY PORTER, NP's Medicare quality score?
MARY PORTER, NP has a CMS MIPS Final Score of 89.7644/100 (Quality: 75.5999). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is MARY PORTER, NP located?
MARY PORTER, NP is located at 1020 RIVER OAKS DR STE 100, FLOWOOD, MS, 39232. Phone: (601) 326-8700.
What is MARY PORTER, NP's NPI number?
MARY PORTER, NP's National Provider Identifier (NPI) is 1356489272, issued on 02/02/2007.
Does MARY PORTER, NP prescribe opioids?
Yes, MARY PORTER, NP had 32 opioid claims in 2023 with an opioid prescribing rate of 1.3%.
How many Registered Nurse providers are there in the US?
There are 175,652 Registered Nurse providers across 56 states in the US. The average Registered Nurse provider writes 1,000 Medicare Part D claims per year.
What drugs does MARY PORTER, NP prescribe most often?
Based on 2023 Medicare Part D data, MARY PORTER, NP's most frequently prescribed drugs include Atorvastatin Calcium, Omeprazole, Alprazolam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARY PORTER, NP accept Medicare?
MARY PORTER, NP appears in CMS Medicare data with 2,397 Part D claims and 298 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARY PORTER, NP's credentials?
MARY PORTER, NP's NPI is 1356489272 with credentials NP. 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