NPI registry status
Active
2026 NPPES data Cardiovascular Disease Physician NPI 1275847378 MD
Verify on CMS → Robert Spencer, MD
Cardiovascular Disease Physician in Peterborough, New Hampshire.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 25,298 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 · 726 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
81%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Robert Spencer, MD filed 4,149 Medicare Part D claims in 2024 as a Cardiovascular Disease Physician in Peterborough, New Hampshire, prescribing 81% generic.
- 4K
- Part D claims, 2024
- 81%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥92nd
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Robert Spencer, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1275847378), first enumerated 07/30/2010.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 4,149 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1275847378 · Cardiovascular Disease Physician
NPI-10 · ENUM-MID · TAX-MID · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1275847378
- ENUM-MID 2010
- TAX-MID 25K Cardiovascular Disease
- RX-MID 4,149
- BOOK-THIN 141 in New Hampshire
- PHOTO-ENUM Ali Al Arab, M.D. · 2010
Robert Spencer, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
4,149 ≥ 92nd percentile 92% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Robert Spencer, 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).
What does the federal data show about Robert Spencer, MD?
Quality data not reportedPrimary specialty
Cardiovascular Disease Physician
Medicare Part D claims
4,149 32% vs specialty avg
Specialty distribution in New Hampshire
How Cardiovascular Disease Physician compares to other specialties among New Hampshire 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 Cardiovascular Disease 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).
Practice Address
Provider Details
| NPI | 1275847378 |
|---|---|
| Specialty | Cardiovascular Disease Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/30/2010 |
Hospital and facility affiliations
Facilities where Robert Spencer, 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.
Monadnock Community Hospital
★★☆☆☆ 2/5
Peterborough, NH
Critical Access Hospitals
CMS CCN: 301309
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
Robert Spencer, MD - brand share 19.0%
Cardiovascular Disease Physician average
19% brand-name claims vs 81% generic, on 4,149 2024 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 2024.
4,149
Total Claims
$1.1M
Total Drug Cost
726
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 10,644.267
- Total Day Supply
- 317,433
- Brand vs Generic
- 19% brand / 81% generic
- Brand Drug Cost
- $1.1M
- Generic Drug Cost
- $60K
Patient Demographics
- Average Patient Age
- 76.8 years
- Avg HCC Risk Score
- 1.46
- Gender Split
- 46% female / 54% male
- Age Distribution
- <65: 38, 65-74: 250, 75-84: 304, 85+: 134
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Robert Spencer, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Metoprolol Succinate
Metoprolol Succinate
493 claims
- Eliquis
Eliquis
487 claims
- Atorvastatin Calcium
Atorvastatin Calcium
444 claims
- Furosemide
Furosemide
322 claims
- Losartan Potassium
Losartan Potassium
266 claims
- Metoprolol Tartrate 194
Metoprolol Tartrate
194 claims
- Amlodipine Besylate 181
Amlodipine Besylate
181 claims
- Isosorbide Mononit… 130
Isosorbide Mononitrate Er
130 claims
| Drug | Claims |
|---|---|
| Metoprolol Succinate | 493 |
| Eliquis Apixaban | 487 |
| Atorvastatin Calcium | 444 |
| Furosemide | 322 |
| Losartan Potassium | 266 |
| Metoprolol Tartrate | 194 |
| Amlodipine Besylate | 181 |
| Isosorbide Mononitrate Er Isosorbide Mononitrate | 130 |
| Spironolactone | 129 |
| Lisinopril | 115 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Cardiovascular Disease Physician in NH →
All providers in New Hampshire →
Compare specialties →
Cardiovascular Disease Physician Overview
How Robert Spencer, MD fits within the Cardiovascular Disease Physician landscape nationally.
25,298
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,149
Avg Claims per Provider
Robert Spencer, MD's 4,149 claims are above the specialty average of 3,149.
Nationwide Cardiovascular Disease Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Spencer, both outside New Hampshire so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2010)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Cardiovascular Disease Physician Providers in New Hampshire
Other clinicians with the same primary specialty enrolled in New Hampshire, drawn from the same CMS NPPES roster as Spencer.
One of 141 Cardiovascular Disease Physician providers enrolled in New Hampshire, 5 are shown here.
Dr. Shawn Ahmad
MD
Lebanon, NH
Dr. Bruce Andrus
M.D.
Lebanon, NH
Dr. Gerald Angoff
M.D.
Manchester, NH
Dr. Teimuraz Apridonidze
MD
Lebanon, NH
Dr. Dhrubajyoti Bandyopadhyay
MBBS, MD
Dover, NH
Compare Cardiovascular Disease Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Robert Spencer, MD's specialty? ▼
Robert Spencer, MD specializes in Cardiovascular Disease Physician and practices in Peterborough, New Hampshire. Credentials: MD.
How much does Robert Spencer, MD prescribe under Medicare Part D? ▼
In 2024, Robert Spencer, MD wrote 4,149 Medicare Part D claims totaling $1.1M in drug costs for 726 beneficiaries.
Where is Robert Spencer, MD located? ▼
Robert Spencer, MD is located at 454 OLD STREET ROAD, Peterborough, NH, 03458. Phone: (603) 924-4646.
What is Robert Spencer, MD's NPI number? ▼
Robert Spencer, MD's National Provider Identifier (NPI) is 1275847378, issued on 07/30/2010.
Does Robert Spencer, MD prescribe more brand-name or generic drugs? ▼
Robert Spencer, MD's prescribing is 19% brand-name and 81% generic drugs by claim count, with $1.1M in brand drug costs.
How many Cardiovascular Disease Physician providers are there in the US? ▼
There are 25,298 Cardiovascular Disease Physician providers across 54 states in the US. The average Cardiovascular Disease Physician provider writes 3,149 Medicare Part D claims per year.
What drugs does Robert Spencer, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Robert Spencer, MD's most frequently prescribed drugs include Metoprolol Succinate, Eliquis, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Robert Spencer, MD accept Medicare? ▼
Robert Spencer, MD appears in CMS Medicare data with 4,149 Part D claims and 726 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Robert Spencer, MD's credentials? ▼
Robert Spencer, MD's NPI is 1275847378 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.