2026 NPPES data Pain Medicine Physician NPI 1841840410 FNP-C
Verify on CMS →

Gregory Schumacher, FNP-C

Pain Medicine Physician in Mesa, Arizona. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers — including 951 in Pain Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration — see our methodology.

Federal data — no proprietary rating. We show these CMS records as-is — no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
4K
Medicare Part D claims · 264 beneficiaries · Pain Medicine Physician avg: 2K
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$42.53
2 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Gregory Schumacher, FNP-C filed 4,480 Medicare Part D claims in 2023 as a Pain Medicine Physician in Mesa, Arizona, prescribing 92% generic.

4K
Part D claims, 2023
92%
generic prescribing
$42.53
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.

Gregory Schumacher, FNP-C's Medicare Part D volume vs every U.S. prescriber

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

4,480 Top 7% higher than 93% 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-eligible specialty (heuristic — not verified)

Gregory Schumacher, FNP-C practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Gregory Schumacher, FNP-C?

Quality data not reported

NPI registry status

Active

Issued 09/16/2019

NPI 1841840410

Primary specialty

Pain Medicine Physician

Niche

951 US NPIs in this specialty

Medicare Part D claims

4,480 116% vs specialty avg

2023 prescription claims

Specialty avg: 2,078

Specialty distribution in Arizona

How Pain Medicine Physician compares to other specialties among Arizona providers

Arizona providers

Largest specialties in Arizona (% of in-state providers)

Pharmacist — 5.6%Pharmacist5.6%Behavior Technician — 5.6%Behavior Technician5.6%Family Nurse Practitioner — 4.3%Family Nurse Practitioner4.3%Physical Therapist — 4.2%Physical Therapist4.2%Speech-Language Pathologist — 3.5%Speech-Language Pathologist3.5%Student in an Organized Health Care Education/Training Program — 3.5%Student in an Organized Health Care Education/Training Program3.5%Pain Medicine Physician — 0%Pain Medicine Physician0%
Largest specialties in Arizona (% of in-state providers)

Specialty board-certification context

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

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

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

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

Gregory Schumacher, FNP-C appears in the CMS NPPES registry as a Pain Medicine Physician provider holding FNP-C credentials at 1148 W BASELINE RD, Mesa, AZ, 85210, with a listed phone of (480) 559-3149. NPI 1841840410 was issued on 09/16/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Schumacher 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 4,480 prescription claims written by this provider, covering 264 Medicare beneficiaries and totaling roughly $356K in drug spend, split 8% brand-name and 92% generic by claim count, with an opioid prescribing rate of 57.4%. 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.

Pain Medicine Physician is a narrow specialty nationwide, with 951 enrolled providers across 49 states and an average of 2,078 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

1148 W BASELINE RD
Mesa, AZ 85210

Provider Details

NPI 1841840410
Specialty Pain Medicine Physician
Credentials FNP-C
Gender Male
NPI Issued 09/16/2019

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 Gregory Schumacher, FNP-C. Source: openpaymentsdata.cms.gov.

Total received

$43

Largest payer

PROTEGA PHARMACEUTIALS 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 · Generic-heavy

Gregory Schumacher, FNP-C — brand share 8.0%
Pain Medicine Physician average

8% brand-name claims vs 92% generic, on 4,480 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.

4,480
Total Claims
$356K
Total Drug Cost
264
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,503
Total Day Supply
123,689
Brand vs Generic
8% brand / 92% generic
Brand Drug Cost
$226K
Generic Drug Cost
$129K
Opioid Claims
2,572 (57.4% rate)

Patient Demographics

Average Patient Age
61.4 years
Avg HCC Risk Score
1.45
Gender Split
61% female / 39% male
Age Distribution
<65: 151, 65-74: 93, 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.

What Gregory Schumacher, FNP-C 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
Oxycodone Hcl
1,388
Gabapentin
349
Tizanidine Hcl
341
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
261
Morphine Sulfate Er
Morphine Sulfate
225
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
188
Cyclobenzaprine Hcl
176
Oxycontin
Oxycodone Hcl
167
Ibuprofen
147
Pregabalin
108

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

Pain Medicine Physician Overview

How Gregory Schumacher, FNP-C fits within the Pain Medicine Physician landscape nationally.

951
Pain Medicine Physician Providers in US
49
States with Pain Medicine Physician
2,078
Avg Claims per Provider

Gregory Schumacher, FNP-C's 4,480 claims are above the specialty average of 2,078.

Nearby Pain Medicine Physician Providers in Arizona

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

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

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry — providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Arizona medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Pain Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only — they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Gregory Schumacher, FNP-C's specialty?
Gregory Schumacher, FNP-C specializes in Pain Medicine Physician and practices in Mesa, Arizona. Credentials: FNP-C.
How much does Gregory Schumacher, FNP-C prescribe under Medicare Part D?
In 2023, Gregory Schumacher, FNP-C wrote 4,480 Medicare Part D claims totaling $356K in drug costs for 264 beneficiaries.
Where is Gregory Schumacher, FNP-C located?
Gregory Schumacher, FNP-C is located at 1148 W BASELINE RD, Mesa, AZ, 85210. Phone: (480) 559-3149.
What is Gregory Schumacher, FNP-C's NPI number?
Gregory Schumacher, FNP-C's National Provider Identifier (NPI) is 1841840410, issued on 09/16/2019.
Does Gregory Schumacher, FNP-C prescribe more brand-name or generic drugs?
Gregory Schumacher, FNP-C's prescribing is 8% brand-name and 92% generic drugs by claim count, with $226K in brand drug costs.
Does Gregory Schumacher, FNP-C prescribe opioids?
Yes, Gregory Schumacher, FNP-C had 2,572 opioid claims in 2023 with an opioid prescribing rate of 57.4%.
How many Pain Medicine Physician providers are there in the US?
There are 951 Pain Medicine Physician providers across 49 states in the US. The average Pain Medicine Physician provider writes 2,078 Medicare Part D claims per year.
What drugs does Gregory Schumacher, FNP-C prescribe most often?
Based on 2023 Medicare Part D data, Gregory Schumacher, FNP-C's most frequently prescribed drugs include Oxycodone Hcl, Gabapentin, Tizanidine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gregory Schumacher, FNP-C accept Medicare?
Gregory Schumacher, FNP-C appears in CMS Medicare data with 4,480 Part D claims and 264 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gregory Schumacher, FNP-C's credentials?
Gregory Schumacher, FNP-C's NPI is 1841840410 with credentials FNP-C. 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

Compiled from official public sources by the PlainDoctor editorial team.