2026 NPPES data Advanced Practice Midwife NPI 1346644267 C.N.M.
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TAMMY UNDERWOOD, C.N.M.

Advanced Practice Midwife in FREEHOLD, New Jersey. 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
67
Medicare Part D claims · 40 beneficiaries · Advanced Practice Midwife avg: 99
Industry payments
$80.39
5 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: TAMMY UNDERWOOD, C.N.M. is a Advanced Practice Midwife ([object Object]) practicing in FREEHOLD, New Jersey with a Medicare Part D prescribing footprint of 67 claims across 40 beneficiaries . Industry payments of $80.39 across 5 transactions are disclosed under CMS Open Payments (Sunshine Act).

What the federal data shows

TAMMY UNDERWOOD, C.N.M. filed 67 Medicare Part D claims in 2023 as a Advanced Practice Midwife in FREEHOLD, New Jersey.

67
Part D claims, 2023
$80.39
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.

TAMMY UNDERWOOD, C.N.M. at a glance

Quality data not reported

NPI registry status

Active

Issued 10/21/2014

NPI 1346644267

Primary specialty

Advanced Practice Midwife

Mid-sized

10,893 US NPIs in this specialty

Medicare Part D claims

67 32% vs specialty avg

2023 prescription claims

Specialty avg: 99

Specialty distribution in New Jersey

How Advanced Practice Midwife compares to other specialties among New Jersey providers

New Jersey providers

Advanced Practice Midwife share within New Jersey

1. Advanced Practice Midwife42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Advanced Practice Midwife share within New Jersey

Specialty board-certification context

Estimated specialty board-certified rate — Advanced Practice Midwife (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Advanced Practice Midwife ABMS/AOA estimate

Est. board-certified rate (Advanced Practice Midwife) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Advanced Practice Midwife) — 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).

TAMMY UNDERWOOD, C.N.M. is a Advanced Practice Midwife provider practicing in FREEHOLD, New Jersey, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: C.N.M.. NPI: 1346644267. 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.

TAMMY UNDERWOOD, C.N.M. appears in the CMS NPPES registry as a Advanced Practice Midwife provider holding C.N.M. credentials at 501 IRON BRIDGE RD STE 10, FREEHOLD, NJ, 07728, with a listed phone of (732) 431-2999. NPI 1346644267 was issued on 10/21/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what UNDERWOOD 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 67 prescription claims written by this provider, covering 40 Medicare beneficiaries and totaling roughly $5K in drug spend. 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.

Advanced Practice Midwife is a mid-sized specialty nationwide, with 10,893 enrolled providers across 55 states and an average of 99 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

501 IRON BRIDGE RD STE 10
FREEHOLD, NJ 07728

Provider Details

NPI 1346644267
Specialty Advanced Practice Midwife
Credentials C.N.M.
Gender Female
NPI Issued 10/21/2014

Hospital and facility affiliations

Facilities where TAMMY UNDERWOOD, C.N.M. 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.

REGIONAL WOMENS HEALTH GROUP LLC
FREEHOLD, NJ

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 TAMMY UNDERWOOD, C.N.M.. Source: openpaymentsdata.cms.gov.

Total received

$80

Largest payer

Lilly USA, LLC

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.

67
Total Claims
$5K
Total Drug Cost
40
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
96
Total Day Supply
1,965
Generic Drug Cost
$1K
Antibiotic Claims
16

Patient Demographics

Average Patient Age
68.8 years
Avg HCC Risk Score
0.93
Gender Split
100% female / 0% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Clotrimazole-Betamethasone
Clotrimazole/Betamethasone Dip
13

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

Advanced Practice Midwife Overview

How TAMMY UNDERWOOD, C.N.M. fits within the Advanced Practice Midwife landscape nationally.

10,893
Advanced Practice Midwife Providers in US
55
States with Advanced Practice Midwife
99
Avg Claims per Provider

TAMMY UNDERWOOD, C.N.M.'s 67 claims are below the specialty average of 99.

Nearby Advanced Practice Midwife Providers in New Jersey

Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as UNDERWOOD.

Compare Advanced Practice Midwife nationally: see state-by-state distribution →

Frequently Asked Questions

What is TAMMY UNDERWOOD, C.N.M.'s specialty?
TAMMY UNDERWOOD, C.N.M. specializes in Advanced Practice Midwife and practices in FREEHOLD, New Jersey. Credentials: C.N.M..
How much does TAMMY UNDERWOOD, C.N.M. prescribe under Medicare Part D?
In 2023, TAMMY UNDERWOOD, C.N.M. wrote 67 Medicare Part D claims totaling $5K in drug costs for 40 beneficiaries.
Where is TAMMY UNDERWOOD, C.N.M. located?
TAMMY UNDERWOOD, C.N.M. is located at 501 IRON BRIDGE RD STE 10, FREEHOLD, NJ, 07728. Phone: (732) 431-2999.
What is TAMMY UNDERWOOD, C.N.M.'s NPI number?
TAMMY UNDERWOOD, C.N.M.'s National Provider Identifier (NPI) is 1346644267, issued on 10/21/2014.
How many Advanced Practice Midwife providers are there in the US?
There are 10,893 Advanced Practice Midwife providers across 55 states in the US. The average Advanced Practice Midwife provider writes 99 Medicare Part D claims per year.
What drugs does TAMMY UNDERWOOD, C.N.M. prescribe most often?
Based on 2023 Medicare Part D data, TAMMY UNDERWOOD, C.N.M.'s most frequently prescribed drugs include Clotrimazole-Betamethasone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does TAMMY UNDERWOOD, C.N.M. accept Medicare?
TAMMY UNDERWOOD, C.N.M. appears in CMS Medicare data with 67 Part D claims and 40 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify TAMMY UNDERWOOD, C.N.M.'s credentials?
TAMMY UNDERWOOD, C.N.M.'s NPI is 1346644267 with credentials C.N.M.. 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