2026 NPPES data Gynecologic Oncology Physician NPI 1033373139 MD
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HEATHER DALTON, MD

Gynecologic Oncology Physician in PHOENIX, Arizona. 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
378
Medicare Part D claims · 99 beneficiaries · Gynecologic Oncology Physician avg: 188
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$473.44
20 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: HEATHER DALTON, MD is a Gynecologic Oncology Physician ([object Object]) practicing in PHOENIX, Arizona with a Medicare Part D prescribing footprint of 378 claims across 99 beneficiaries — 13% brand-name prescribing . Industry payments of $473.44 across 20 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: HEATHER DALTON, MD filed 378 Medicare Part D claims in 2023 across PHOENIX, Arizona. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

HEATHER DALTON, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

HEATHER DALTON, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 07/17/2008

NPI 1033373139

Primary specialty

Gynecologic Oncology Physician

Niche

1,360 US NPIs in this specialty

Medicare Part D claims

378 101% vs specialty avg

2023 prescription claims

Specialty avg: 188

Specialty distribution in Arizona

How Gynecologic Oncology Physician compares to other specialties among Arizona providers

Arizona providers

Gynecologic Oncology Physician share within Arizona

1. Gynecologic Oncology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Gynecologic Oncology Physician share within Arizona

Specialty board-certification context

Estimated specialty board-certified rate — Gynecologic Oncology Physician (ABMS / AOA reference)

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

Est. board-certified rate (Gynecologic Oncology Physician) — ABMS / AOA estimate

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

HEATHER DALTON, MD is a Gynecologic Oncology Physician provider practicing in PHOENIX, Arizona, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1033373139. 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.

HEATHER DALTON, MD appears in the CMS NPPES registry as a Gynecologic Oncology Physician provider holding MD credentials at 2222 E HIGHLAND AVE STE 400, PHOENIX, AZ, 85016, with a listed phone of (602) 277-4868. NPI 1033373139 was issued on 07/17/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DALTON 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 378 prescription claims written by this provider, covering 99 Medicare beneficiaries and totaling roughly $431K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 9.5%. 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.

Gynecologic Oncology Physician is a narrow specialty nationwide, with 1,360 enrolled providers across 49 states and an average of 188 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

2222 E HIGHLAND AVE STE 400
PHOENIX, AZ 85016

Provider Details

NPI 1033373139
Specialty Gynecologic Oncology Physician
Credentials MD
Gender Female
NPI Issued 07/17/2008

Hospital and facility affiliations

Facilities where HEATHER DALTON, 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.

HONORHEALTH AMBULATORY
AVONDALE, AZ

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 HEATHER DALTON, MD. Source: openpaymentsdata.cms.gov.

Total received

$473

Largest payer

Genmab U.S., 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

HEATHER DALTON, MD — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 378 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.

378
Total Claims
$431K
Total Drug Cost
99
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
459
Total Day Supply
10,241
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$425K
Generic Drug Cost
$7K
Opioid Claims
36 (9.5% rate)

Patient Demographics

Average Patient Age
71.3 years
Avg HCC Risk Score
1.77
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
Ondansetron Odt
Ondansetron
37
Letrozole
30
Dexamethasone
24
Oxycodone Hcl
24
Gabapentin
23
Prochlorperazine Maleate
22
Lynparza
Olaparib
21
Imiquimod
15
Escitalopram Oxalate
13
Lidocaine-Prilocaine
Lidocaine/Prilocaine
12

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

Gynecologic Oncology Physician Overview

How HEATHER DALTON, MD fits within the Gynecologic Oncology Physician landscape nationally.

1,360
Gynecologic Oncology Physician Providers in US
49
States with Gynecologic Oncology Physician
188
Avg Claims per Provider

HEATHER DALTON, MD's 378 claims are above the specialty average of 188.

Nearby Gynecologic Oncology Physician Providers in Arizona

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

Compare Gynecologic Oncology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is HEATHER DALTON, MD's specialty?
HEATHER DALTON, MD specializes in Gynecologic Oncology Physician and practices in PHOENIX, Arizona. Credentials: MD.
How much does HEATHER DALTON, MD prescribe under Medicare Part D?
In 2023, HEATHER DALTON, MD wrote 378 Medicare Part D claims totaling $431K in drug costs for 99 beneficiaries.
Where is HEATHER DALTON, MD located?
HEATHER DALTON, MD is located at 2222 E HIGHLAND AVE STE 400, PHOENIX, AZ, 85016. Phone: (602) 277-4868.
What is HEATHER DALTON, MD's NPI number?
HEATHER DALTON, MD's National Provider Identifier (NPI) is 1033373139, issued on 07/17/2008.
Does HEATHER DALTON, MD prescribe more brand-name or generic drugs?
HEATHER DALTON, MD's prescribing is 13% brand-name and 87% generic drugs by claim count, with $425K in brand drug costs.
Does HEATHER DALTON, MD prescribe opioids?
Yes, HEATHER DALTON, MD had 36 opioid claims in 2023 with an opioid prescribing rate of 9.5%.
How many Gynecologic Oncology Physician providers are there in the US?
There are 1,360 Gynecologic Oncology Physician providers across 49 states in the US. The average Gynecologic Oncology Physician provider writes 188 Medicare Part D claims per year.
What drugs does HEATHER DALTON, MD prescribe most often?
Based on 2023 Medicare Part D data, HEATHER DALTON, MD's most frequently prescribed drugs include Ondansetron Odt, Letrozole, Dexamethasone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does HEATHER DALTON, MD accept Medicare?
HEATHER DALTON, MD appears in CMS Medicare data with 378 Part D claims and 99 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify HEATHER DALTON, MD's credentials?
HEATHER DALTON, MD's NPI is 1033373139 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