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 24,810 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 · 679 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
80%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Robert Spencer, MD filed 4,202 Medicare Part D claims in 2023 as a Cardiovascular Disease Physician in Peterborough, New Hampshire, prescribing 80% generic.
- 4K
- Part D claims, 2023
- 80%
- 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.
Robert Spencer, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
4,202 Top 8% higher than 92% 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)
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
4,202 39% 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).
Robert Spencer, MD appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding MD credentials at 454 OLD STREET ROAD, Peterborough, NH, 03458, with a listed phone of (603) 924-4646. NPI 1275847378 was issued on 07/30/2010.
Medicare Part D records for calendar year 2023 show 4,202 prescription claims written by this provider, covering 679 Medicare beneficiaries and totaling roughly $837K in drug spend, split 20% brand-name and 80% generic by claim count.
Cardiovascular Disease Physician is a mid-sized specialty nationwide, with 24,810 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 | 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 20.0%
Cardiovascular Disease Physician average
20% brand-name claims vs 80% generic, on 4,202 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.
4,202
Total Claims
$837K
Total Drug Cost
679
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 10,544
- Total Day Supply
- 312,376
- Brand vs Generic
- 20% brand / 80% generic
- Brand Drug Cost
- $751K
- Generic Drug Cost
- $86K
Patient Demographics
- Average Patient Age
- 75.8 years
- Avg HCC Risk Score
- 1.40
- Gender Split
- 46% female / 54% male
- Age Distribution
- <65: 44, 65-74: 249, 75-84: 284, 85+: 102
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Robert Spencer, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Metoprolol Succinate
Metoprolol Succinate
500 claims
- Eliquis
Eliquis
493 claims
- Atorvastatin Calcium
Atorvastatin Calcium
447 claims
- Furosemide
Furosemide
322 claims
- Losartan Potassium
Losartan Potassium
210 claims
- Metoprolol Tartrate 185
Metoprolol Tartrate
185 claims
- Spironolactone 181
Spironolactone
181 claims
- Lisinopril 153
Lisinopril
153 claims
| Drug | Claims |
|---|---|
| Metoprolol Succinate | 500 |
| Eliquis Apixaban | 493 |
| Atorvastatin Calcium | 447 |
| Furosemide | 322 |
| Losartan Potassium | 210 |
| Metoprolol Tartrate | 185 |
| Spironolactone | 181 |
| Lisinopril | 153 |
| Amlodipine Besylate | 151 |
| Isosorbide Mononitrate Er Isosorbide Mononitrate | 124 |
* 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.
24,810
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,033
Avg Claims per Provider
Robert Spencer, MD's 4,202 claims are above the specialty average of 3,033.
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.
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 →
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 New Hampshire 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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Explore New Hampshire
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 2023, Robert Spencer, MD wrote 4,202 Medicare Part D claims totaling $837K in drug costs for 679 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 20% brand-name and 80% generic drugs by claim count, with $751K in brand drug costs.
How many Cardiovascular Disease Physician providers are there in the US? ▼
There are 24,810 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 Robert Spencer, MD prescribe most often? ▼
Based on 2023 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 4,202 Part D claims and 679 Medicare beneficiaries in 2023. 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 (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.
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 May 2026.