NPI registry status
Active
2026 NPPES data Cardiovascular Disease Physician NPI 1003885708 MD
Verify on CMS → Heinrich Grube, MD
Cardiovascular Disease Physician in Augusta, Maine.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 24,795 in Cardiovascular Disease 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 · 615 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
98.1/100
▲ 15 pts above national avg 83.1 · Exceptional
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
Heinrich Grube, MD reported a CMS MIPS final score of 98.1/100 - above the 83.1 national average - and filed 3,719 Medicare Part D claims in 2023.
- 98.1/100
- MIPS score · +15 vs avg
- 4K
- 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.
Heinrich Grube, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
98 Top 11% higher than 89% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Heinrich Grube, MD sits
This provider among cardiovascular disease physician peers
Across the 8,753 cardiovascular disease physician providers who report both Medicare Part D prescribing and a MIPS quality score, Heinrich Grube, MD writes more Part D claims than 61% of them and scores higher on MIPS quality than 87% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one cardiovascular disease physician peer from a representative sample of 60; the gold marker is Heinrich Grube, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Heinrich Grube, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 3 hospital affiliations - 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 Heinrich Grube, MD?
High performer (top quartile)Primary specialty
Cardiovascular Disease Physician
Medicare Part D claims
3,719 23% vs specialty avg
MIPS final score
98.1/100 15 pts vs avg
Specialty distribution in Maine
How Cardiovascular Disease Physician compares to other specialties among Maine providers
Medicare quality performance, MIPS
Heinrich Grube, MD's 2023 MIPS final score plotted against the Cardiovascular Disease Physician national average
- MIPS Final Score
- 98.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Cardiovascular Disease Physician) - 98.1/100 vs national avg 83.1
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).
Heinrich Grube, MD appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding MD credentials at 35 MEDICAL CENTER PARKWAY, SUITE 101, Augusta, ME, 04330, with a listed phone of (207) 430-4321. NPI 1003885708 was issued on 03/15/2006.
Medicare Part D records for calendar year 2023 show 3,719 prescription claims written by this provider, covering 615 Medicare beneficiaries and totaling roughly $627K in drug spend, split 12% brand-name and 88% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 98.1/100 for the 2023 performance year (Quality 86.1), compared with the national average of 83.1.
Cardiovascular Disease Physician is a mid-sized specialty nationwide, with 24,795 enrolled providers across 54 states and an average of 3,033 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 | 1003885708 |
|---|---|
| Specialty | Cardiovascular Disease Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 03/15/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
98.0699
Final Score
Avg: 83.1
86.1398
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Heinrich Grube, 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.
According to CMS billing records, Heinrich Grube, MD is affiliated with 3 Medicare-billing facilities.
Mainegeneral Medical Center
Waterville, ME
Mainehealth
Farmington, ME
Redington-Fairview General Hospital
Skowhegan, ME
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Typical
Heinrich Grube, MD - brand share 12.0%
Cardiovascular Disease Physician average
12% brand-name claims vs 88% generic, on 3,719 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.
3,719
Total Claims
$627K
Total Drug Cost
615
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 10,507
- Total Day Supply
- 312,828
- Brand vs Generic
- 12% brand / 88% generic
- Brand Drug Cost
- $542K
- Generic Drug Cost
- $86K
Patient Demographics
- Average Patient Age
- 75.0 years
- Avg HCC Risk Score
- 1.63
- Gender Split
- 48% female / 52% male
- Age Distribution
- <65: 43, 65-74: 258, 75-84: 233, 85+: 81
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Heinrich Grube, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
670 claims
- Metoprolol Succinate
Metoprolol Succinate
393 claims
- Eliquis 256
Eliquis
256 claims
- Lisinopril 246
Lisinopril
246 claims
- Carvedilol 207
Carvedilol
207 claims
- Furosemide 200
Furosemide
200 claims
- Rosuvastatin Calcium 192
Rosuvastatin Calcium
192 claims
- Metoprolol Tartrate 163
Metoprolol Tartrate
163 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 670 |
| Metoprolol Succinate | 393 |
| Eliquis Apixaban | 256 |
| Lisinopril | 246 |
| Carvedilol | 207 |
| Furosemide | 200 |
| Rosuvastatin Calcium | 192 |
| Metoprolol Tartrate | 163 |
| Amlodipine Besylate | 145 |
| Isosorbide Mononitrate Er Isosorbide Mononitrate | 141 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Cardiovascular Disease Physician Overview
How Heinrich Grube, MD fits within the Cardiovascular Disease Physician landscape nationally.
24,795
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,033
Avg Claims per Provider
Heinrich Grube, MD's 3,719 claims are above the specialty average of 3,033.
Nearby Cardiovascular Disease Physician Providers in Maine
Other clinicians with the same primary specialty enrolled in Maine, drawn from the same CMS NPPES roster as Grube.
Abraham Abernethy
Scarborough, ME
Dr. David Abisalih
MD
Skowhegan, ME
Dr. Warren Alpern
M.D.
Scarborough, ME
Dr. Beata Bajgierowicz
MD
Lewiston, ME
Dr. Lawrence Baker
MD
Lewiston, ME
Compare Cardiovascular Disease 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 Maine medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Cardiovascular Disease 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 Heinrich Grube, MD's specialty? ▼
Heinrich Grube, MD specializes in Cardiovascular Disease Physician and practices in Augusta, Maine. Credentials: MD.
How much does Heinrich Grube, MD prescribe under Medicare Part D? ▼
In 2023, Heinrich Grube, MD wrote 3,719 Medicare Part D claims totaling $627K in drug costs for 615 beneficiaries.
What is Heinrich Grube, MD's Medicare quality score? ▼
Heinrich Grube, MD has a CMS MIPS Final Score of 98.1/100 (Quality: 86.1). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Heinrich Grube, MD located? ▼
Heinrich Grube, MD is located at 35 MEDICAL CENTER PARKWAY, SUITE 101, Augusta, ME, 04330. Phone: (207) 430-4321.
What is Heinrich Grube, MD's NPI number? ▼
Heinrich Grube, MD's National Provider Identifier (NPI) is 1003885708, issued on 03/15/2006.
Does Heinrich Grube, MD prescribe more brand-name or generic drugs? ▼
Heinrich Grube, MD's prescribing is 12% brand-name and 88% generic drugs by claim count, with $542K in brand drug costs.
How many Cardiovascular Disease Physician providers are there in the US? ▼
There are 24,795 Cardiovascular Disease Physician providers across 54 states in the US. The average Cardiovascular Disease Physician provider writes 3,033 Medicare Part D claims per year.
What drugs does Heinrich Grube, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Heinrich Grube, MD's most frequently prescribed drugs include Atorvastatin Calcium, Metoprolol Succinate, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Heinrich Grube, MD accept Medicare? ▼
Heinrich Grube, MD appears in CMS Medicare data with 3,719 Part D claims and 615 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Heinrich Grube, MD's credentials? ▼
Heinrich Grube, MD's NPI is 1003885708 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
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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.