2026 NPPES data Family Medicine Physician NPI 1104872316 MD
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MARY KIRBY, MD

Family Medicine Physician in NEW BERN, North Carolina. 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
11K
Medicare Part D claims · 544 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$402.43
17 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

MARY KIRBY, MD filed 10,614 Medicare Part D claims in 2023 as a Family Medicine Physician in NEW BERN, North Carolina, prescribing 83% generic.

11K
Part D claims, 2023
83%
generic prescribing
Likely
board-certified (heuristic)

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 KIRBY, MD's Medicare Part D volume vs every U.S. prescriber

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

10,614 Top 2% higher than 98% 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

Board certification likely (heuristic — not verified)

MARY KIRBY, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about MARY KIRBY, MD?

Quality data not reported

NPI registry status

Active

Issued 05/26/2006

NPI 1104872316

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

10,614 211% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

Specialty distribution in North Carolina

How Family Medicine Physician compares to other specialties among North Carolina providers

North Carolina providers

Family Medicine Physician share within North Carolina

1. Family Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Family Medicine Physician share within North Carolina

Specialty board-certification context

Estimated specialty board-certified rate — Family Medicine Physician (ABMS / AOA reference)

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

Est. board-certified rate (Family Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Family 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).

MARY KIRBY, MD appears in the CMS NPPES registry as a Family Medicine Physician provider holding MD credentials at 1040 MEDICAL PARK AVE, NEW BERN, NC, 28562, with a listed phone of (252) 633-1678. NPI 1104872316 was issued on 05/26/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KIRBY 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 10,614 prescription claims written by this provider, covering 544 Medicare beneficiaries and totaling roughly $1.1 million in drug spend, split 17% brand-name and 83% generic by claim count, 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.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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

1040 MEDICAL PARK AVE
NEW BERN, NC 28562

Provider Details

NPI 1104872316
Specialty Family Medicine Physician
Credentials MD
Gender Female
NPI Issued 05/26/2006

Hospital and facility affiliations

Facilities where MARY KIRBY, MD 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.

COASTAL CAROLINA HEALTH CARE PA
NEW BERN, NC
PROACTIVE THERAPY OF NORTH CAROLINA INC
WILSON, NC
SELECT PHYSICAL THERAPY HOLDINGS INC
NEW BERN, NC

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 KIRBY, MD. Source: openpaymentsdata.cms.gov.

Total received

$402

Largest payer

SHIELD THERAPEUTICS 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

MARY KIRBY, MD — brand share 17.0%
Specialty average (est.)

17% brand-name claims vs 83% generic, on 10,614 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.

10,614
Total Claims
$1.1M
Total Drug Cost
544
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
20,717
Total Day Supply
595,007
Brand vs Generic
17% brand / 83% generic
Brand Drug Cost
$894K
Generic Drug Cost
$164K
Opioid Claims
135 (1.3% rate)
Antibiotic Claims
143

Patient Demographics

Average Patient Age
73.8 years
Avg HCC Risk Score
1.20
Gender Split
79% female / 21% male
Age Distribution
<65: 33, 65-74: 272, 75-84: 186, 85+: 53

Top Prescribed Drugs (Medicare Part D)

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

What MARY KIRBY, MD 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
553
Rosuvastatin Calcium
437
Levothyroxine Sodium
425
Omeprazole
343
Amlodipine Besylate
291
Metoprolol Succinate
243
Lisinopril
221
Escitalopram Oxalate
220
Losartan Potassium
213
Furosemide
206

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

Family Medicine Physician Overview

How MARY KIRBY, MD fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

MARY KIRBY, MD's 10,614 claims are above the specialty average of 3,418.

Nearby Family Medicine Physician Providers in North Carolina

Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as KIRBY.

Compare Family Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MARY KIRBY, MD's specialty?
MARY KIRBY, MD specializes in Family Medicine Physician and practices in NEW BERN, North Carolina. Credentials: MD.
How much does MARY KIRBY, MD prescribe under Medicare Part D?
In 2023, MARY KIRBY, MD wrote 10,614 Medicare Part D claims totaling $1.1M in drug costs for 544 beneficiaries.
Where is MARY KIRBY, MD located?
MARY KIRBY, MD is located at 1040 MEDICAL PARK AVE, NEW BERN, NC, 28562. Phone: (252) 633-1678.
What is MARY KIRBY, MD's NPI number?
MARY KIRBY, MD's National Provider Identifier (NPI) is 1104872316, issued on 05/26/2006.
Does MARY KIRBY, MD prescribe more brand-name or generic drugs?
MARY KIRBY, MD's prescribing is 17% brand-name and 83% generic drugs by claim count, with $894K in brand drug costs.
Does MARY KIRBY, MD prescribe opioids?
Yes, MARY KIRBY, MD had 135 opioid claims in 2023 with an opioid prescribing rate of 1.3%.
How many Family Medicine Physician providers are there in the US?
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does MARY KIRBY, MD prescribe most often?
Based on 2023 Medicare Part D data, MARY KIRBY, MD's most frequently prescribed drugs include Atorvastatin Calcium, Rosuvastatin Calcium, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARY KIRBY, MD accept Medicare?
MARY KIRBY, MD appears in CMS Medicare data with 10,614 Part D claims and 544 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARY KIRBY, MD's credentials?
MARY KIRBY, MD's NPI is 1104872316 with credentials MD. 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