NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1487972964 M.D.
Verify on CMS → Nickalaus Gramze, M.D.
Internal Medicine Physician in Phoenix, 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 172,858 in Internal 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
1K
Medicare Part D claims · 201 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.7K
19 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Nickalaus Gramze, M.D. filed 1,033 Medicare Part D claims in 2023 as a Internal Medicine Physician in Phoenix, Arizona, prescribing 88% generic.
- 1K
- Part D claims, 2023
- 88%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Nickalaus Gramze, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,033 Top 24% higher than 76% of 1,370,886 prescribers
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 certification likely (heuristic, not verified)
Nickalaus Gramze, M.D. 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).
What does the federal data show about Nickalaus Gramze, M.D.?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
1,033 62% vs specialty avg
Specialty distribution in Arizona
How Internal Medicine Physician compares to other specialties among Arizona providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Internal Medicine Physician. Verify directly:
How MIPS and board certification work
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).
Nickalaus Gramze, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 755 E MCDOWELL RD FL 4, Phoenix, AZ, 85006, with a listed phone of (602) 521-3144. NPI 1487972964 was issued on 05/10/2010.
Medicare Part D records for calendar year 2023 show 1,033 prescription claims written by this provider, covering 201 Medicare beneficiaries and totaling roughly $169K in drug spend, split 12% brand-name and 88% generic by claim count.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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
Provider Details
| NPI | 1487972964 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/10/2010 |
Hospital and facility affiliations
Facilities where Nickalaus Gramze, M.D. 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.
Vhs Outpatient Clinics Inc
Buckeye, 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 Nickalaus Gramze, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$1.7K
Largest payer
ATRICURE, 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
Nickalaus Gramze, M.D. - brand share 12.0%
Internal Medicine Physician average
12% brand-name claims vs 88% generic, on 1,033 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.
1,033
Total Claims
$169K
Total Drug Cost
201
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,781
- Total Day Supply
- 82,469
- Brand vs Generic
- 12% brand / 88% generic
- Brand Drug Cost
- $149K
- Generic Drug Cost
- $21K
Patient Demographics
- Average Patient Age
- 72.2 years
- Avg HCC Risk Score
- 1.34
- Gender Split
- 49% female / 51% male
- Age Distribution
- <65: 21, 65-74: 101, 75-84: 67, 85+: 12
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Nickalaus Gramze, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Rosuvastatin Calcium
Rosuvastatin Calcium
253 claims
- Metoprolol Succinate
Metoprolol Succinate
144 claims
- Atorvastatin Calcium 87
Atorvastatin Calcium
87 claims
- Losartan Potassium 80
Losartan Potassium
80 claims
- Amlodipine Besylate 48
Amlodipine Besylate
48 claims
- Lisinopril 46
Lisinopril
46 claims
- Eliquis 45
Eliquis
45 claims
- Carvedilol 32
Carvedilol
32 claims
| Drug | Claims |
|---|---|
| Rosuvastatin Calcium | 253 |
| Metoprolol Succinate | 144 |
| Atorvastatin Calcium | 87 |
| Losartan Potassium | 80 |
| Amlodipine Besylate | 48 |
| Lisinopril | 46 |
| Eliquis Apixaban | 45 |
| Carvedilol | 32 |
| Furosemide | 30 |
| Entresto Sacubitril/Valsartan | 25 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Nickalaus Gramze, M.D. fits within the Internal Medicine Physician landscape nationally.
172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Nickalaus Gramze, M.D.'s 1,033 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Arizona
Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as Gramze.
Dr. Daniel Aaronson
MD
Tucson, AZ
Dr. Jaber Abawi
MD
Payson, AZ
Dr. Demsas Abay
MD
Peoria, AZ
Dr. Firas Abbas
M.D. M.P.H.
Mesa, AZ
Dr. Hassan Abbas
D.O.
Mesa, AZ
Compare Internal 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 Internal 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.
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Frequently Asked Questions
What is Nickalaus Gramze, M.D.'s specialty? ▼
Nickalaus Gramze, M.D. specializes in Internal Medicine Physician and practices in Phoenix, Arizona. Credentials: M.D..
How much does Nickalaus Gramze, M.D. prescribe under Medicare Part D? ▼
In 2023, Nickalaus Gramze, M.D. wrote 1,033 Medicare Part D claims totaling $169K in drug costs for 201 beneficiaries.
Where is Nickalaus Gramze, M.D. located? ▼
Nickalaus Gramze, M.D. is located at 755 E MCDOWELL RD FL 4, Phoenix, AZ, 85006. Phone: (602) 521-3144.
What is Nickalaus Gramze, M.D.'s NPI number? ▼
Nickalaus Gramze, M.D.'s National Provider Identifier (NPI) is 1487972964, issued on 05/10/2010.
Does Nickalaus Gramze, M.D. prescribe more brand-name or generic drugs? ▼
Nickalaus Gramze, M.D.'s prescribing is 12% brand-name and 88% generic drugs by claim count, with $149K in brand drug costs.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Nickalaus Gramze, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Nickalaus Gramze, M.D.'s most frequently prescribed drugs include Rosuvastatin Calcium, Metoprolol Succinate, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Nickalaus Gramze, M.D. accept Medicare? ▼
Nickalaus Gramze, M.D. appears in CMS Medicare data with 1,033 Part D claims and 201 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Nickalaus Gramze, M.D.'s credentials? ▼
Nickalaus Gramze, M.D.'s NPI is 1487972964 with credentials M.D.. 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
View source datasets and methodology notes
- 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.