2026 NPPES data Obstetrics Physician NPI 1124515028 DO
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KATIE GROFF, DO

Obstetrics Physician in GLENDALE, 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
70
Medicare Part D claims · 37 beneficiaries · Obstetrics Physician avg: 319
Industry payments
$3.2K
8 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: KATIE GROFF, DO is a Obstetrics Physician ([object Object]) practicing in GLENDALE, Arizona with a Medicare Part D prescribing footprint of 70 claims across 37 beneficiaries . Industry payments of $3.2K across 8 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: KATIE GROFF, DO filed 70 Medicare Part D claims in 2023 across GLENDALE, Arizona. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

KATIE GROFF, DO 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).

KATIE GROFF, DO at a glance

Quality data not reported

NPI registry status

Active

Issued 04/16/2018

NPI 1124515028

Primary specialty

Obstetrics Physician

Niche

1,402 US NPIs in this specialty

Medicare Part D claims

70 78% vs specialty avg

2023 prescription claims

Specialty avg: 319

Specialty distribution in Arizona

How Obstetrics Physician compares to other specialties among Arizona providers

Arizona providers

Obstetrics Physician share within Arizona

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

Specialty board-certification context

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

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

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

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

KATIE GROFF, DO is a Obstetrics Physician provider practicing in GLENDALE, Arizona, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: DO. NPI: 1124515028. 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.

KATIE GROFF, DO appears in the CMS NPPES registry as a Obstetrics Physician provider holding DO credentials at 6678 W THUNDERBIRD RD, GLENDALE, AZ, 85306, with a listed phone of (029) 781-5006. NPI 1124515028 was issued on 04/16/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GROFF 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 70 prescription claims written by this provider, covering 37 Medicare beneficiaries and totaling roughly $4K 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.

Obstetrics Physician is a narrow specialty nationwide, with 1,402 enrolled providers across 54 states and an average of 319 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

6678 W THUNDERBIRD RD
GLENDALE, AZ 85306

Provider Details

NPI 1124515028
Specialty Obstetrics Physician
Credentials DO
Gender Female
NPI Issued 04/16/2018

Hospital and facility affiliations

Facilities where KATIE GROFF, DO 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
SCOTTSDALE, 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 KATIE GROFF, DO. Source: openpaymentsdata.cms.gov.

Total received

$3.2K

Largest payer

INTUITIVE SURGICAL, 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.

70
Total Claims
$4K
Total Drug Cost
37
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
84
Total Day Supply
1,557
Generic Drug Cost
$3K

Patient Demographics

Average Patient Age
61.8 years
Avg HCC Risk Score
1.11
Gender Split
100% female / 0% male
Age Distribution
<65: 13, 65-74: 18, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Estradiol (Once Weekly)
Estradiol
13

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

Obstetrics Physician Overview

How KATIE GROFF, DO fits within the Obstetrics Physician landscape nationally.

1,402
Obstetrics Physician Providers in US
54
States with Obstetrics Physician
319
Avg Claims per Provider

KATIE GROFF, DO's 70 claims are below the specialty average of 319.

Nearby Obstetrics Physician Providers in Arizona

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

Compare Obstetrics Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is KATIE GROFF, DO's specialty?
KATIE GROFF, DO specializes in Obstetrics Physician and practices in GLENDALE, Arizona. Credentials: DO.
How much does KATIE GROFF, DO prescribe under Medicare Part D?
In 2023, KATIE GROFF, DO wrote 70 Medicare Part D claims totaling $4K in drug costs for 37 beneficiaries.
Where is KATIE GROFF, DO located?
KATIE GROFF, DO is located at 6678 W THUNDERBIRD RD, GLENDALE, AZ, 85306. Phone: (029) 781-5006.
What is KATIE GROFF, DO's NPI number?
KATIE GROFF, DO's National Provider Identifier (NPI) is 1124515028, issued on 04/16/2018.
How many Obstetrics Physician providers are there in the US?
There are 1,402 Obstetrics Physician providers across 54 states in the US. The average Obstetrics Physician provider writes 319 Medicare Part D claims per year.
What drugs does KATIE GROFF, DO prescribe most often?
Based on 2023 Medicare Part D data, KATIE GROFF, DO's most frequently prescribed drugs include Estradiol (Once Weekly). This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KATIE GROFF, DO accept Medicare?
KATIE GROFF, DO appears in CMS Medicare data with 70 Part D claims and 37 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KATIE GROFF, DO's credentials?
KATIE GROFF, DO's NPI is 1124515028 with credentials DO. 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