2026 NPPES data Family Nurse Practitioner NPI 1629461009 NP
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MANDI LAHMAN, NP

Family Nurse Practitioner in MILLSBORO, Delaware. 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
6K
Medicare Part D claims · 646 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$792.26
44 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

MANDI LAHMAN, NP filed 5,528 Medicare Part D claims in 2023 as a Family Nurse Practitioner in MILLSBORO, Delaware, prescribing 90% generic.

6K
Part D claims, 2023
90%
generic prescribing
$792.26
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.

MANDI LAHMAN, NP's Medicare Part D volume vs every U.S. prescriber

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

5,528 Top 5% higher than 95% 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 MANDI LAHMAN, NP?

Quality data not reported

NPI registry status

Active

Issued 03/10/2015

NPI 1629461009

Primary specialty

Family Nurse Practitioner

High-volume

209,817 US NPIs in this specialty

Medicare Part D claims

5,528 352% vs specialty avg

2023 prescription claims

Specialty avg: 1,222

Specialty distribution in Delaware

How Family Nurse Practitioner compares to other specialties among Delaware providers

Delaware providers

Family Nurse Practitioner share within Delaware

1. Family Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Family Nurse Practitioner share within Delaware

Specialty board-certification context

Estimated specialty board-certified rate — Family Nurse Practitioner (ABMS / AOA reference)

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

Est. board-certified rate (Family Nurse Practitioner) — ABMS / AOA estimate

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

MANDI LAHMAN, NP appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding NP credentials at 30265 COMMERCE DR UNIT 206, MILLSBORO, DE, 19966, with a listed phone of (302) 732-8400. NPI 1629461009 was issued on 03/10/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LAHMAN 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 5,528 prescription claims written by this provider, covering 646 Medicare beneficiaries and totaling roughly $558K in drug spend, split 10% brand-name and 90% generic by claim count, with an opioid prescribing rate of 0.6%. 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 Nurse Practitioner is a high-volume specialty nationwide, with 209,817 enrolled providers across 56 states and an average of 1,222 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

30265 COMMERCE DR UNIT 206
MILLSBORO, DE 19966

Provider Details

NPI 1629461009
Specialty Family Nurse Practitioner
Credentials NP
Gender Female
NPI Issued 03/10/2015

Hospital and facility affiliations

Facilities where MANDI LAHMAN, 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.

TIDALHEALTH PRIMARY CARE LLC
MILLSBORO, DE

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 MANDI LAHMAN, NP. Source: openpaymentsdata.cms.gov.

Total received

$792

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.

Brand vs generic prescribing mix · Typical

MANDI LAHMAN, NP — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 5,528 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.

5,528
Total Claims
$558K
Total Drug Cost
646
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
14,104
Total Day Supply
414,773
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$443K
Generic Drug Cost
$111K
Opioid Claims
34 (0.6% rate)
Antibiotic Claims
100

Patient Demographics

Average Patient Age
71.4 years
Avg HCC Risk Score
0.87
Gender Split
63% female / 37% male
Age Distribution
<65: 47, 65-74: 393, 75-84: 187, 85+: 19

Top Prescribed Drugs (Medicare Part D)

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

What MANDI LAHMAN, 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
423
Amlodipine Besylate
237
Levothyroxine Sodium
232
Losartan Potassium
223
Lisinopril
176
Simvastatin
165
Omeprazole
143
Hydrochlorothiazide
129
Metformin Hcl
114
Fluticasone Propionate
97

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

Family Nurse Practitioner Overview

How MANDI LAHMAN, NP fits within the Family Nurse Practitioner landscape nationally.

209,817
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,222
Avg Claims per Provider

MANDI LAHMAN, NP's 5,528 claims are above the specialty average of 1,222.

Nearby Family Nurse Practitioner Providers in Delaware

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

Compare Family Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is MANDI LAHMAN, NP's specialty?
MANDI LAHMAN, NP specializes in Family Nurse Practitioner and practices in MILLSBORO, Delaware. Credentials: NP.
How much does MANDI LAHMAN, NP prescribe under Medicare Part D?
In 2023, MANDI LAHMAN, NP wrote 5,528 Medicare Part D claims totaling $558K in drug costs for 646 beneficiaries.
Where is MANDI LAHMAN, NP located?
MANDI LAHMAN, NP is located at 30265 COMMERCE DR UNIT 206, MILLSBORO, DE, 19966. Phone: (302) 732-8400.
What is MANDI LAHMAN, NP's NPI number?
MANDI LAHMAN, NP's National Provider Identifier (NPI) is 1629461009, issued on 03/10/2015.
Does MANDI LAHMAN, NP prescribe more brand-name or generic drugs?
MANDI LAHMAN, NP's prescribing is 10% brand-name and 90% generic drugs by claim count, with $443K in brand drug costs.
Does MANDI LAHMAN, NP prescribe opioids?
Yes, MANDI LAHMAN, NP had 34 opioid claims in 2023 with an opioid prescribing rate of 0.6%.
How many Family Nurse Practitioner providers are there in the US?
There are 209,817 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,222 Medicare Part D claims per year.
What drugs does MANDI LAHMAN, NP prescribe most often?
Based on 2023 Medicare Part D data, MANDI LAHMAN, NP's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MANDI LAHMAN, NP accept Medicare?
MANDI LAHMAN, NP appears in CMS Medicare data with 5,528 Part D claims and 646 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MANDI LAHMAN, NP's credentials?
MANDI LAHMAN, NP's NPI is 1629461009 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.
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