NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1497744213 MD
Verify on CMS → Edward Ryter, MD
Internal Medicine Physician in South Hadley, Massachusetts.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,737 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
5K
Medicare Part D claims · 389 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
85%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Edward Ryter, MD filed 4,937 Medicare Part D claims in 2023 as an Internal Medicine Physician in South Hadley, Massachusetts, prescribing 85% generic.
- 5K
- Part D claims, 2023
- 85%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥94th
- 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.
CMS NPPES provider registry desk
NPI 1497744213 · Internal Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-MID · BOOK-MID · PHOTO-ENUM
- NPI-10 1497744213
- ENUM-LEGACY 2005
- TAX-MEGA 173K Internal Medicine
- RX-MID 4,937
- BOOK-MID 7,862 in Massachusetts
- PHOTO-ENUM Kun Huang · 2005
Edward Ryter, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
4,937 ≥ 94th percentile 94% of 1,370,886 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 · 2023
✓
Board certification likely (heuristic, not verified)
Edward Ryter, 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 Edward Ryter, MD?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
4,937 82% vs specialty avg
Specialty distribution in Massachusetts
How Internal Medicine Physician compares to other specialties among Massachusetts 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).
Practice Address
Provider Details
| NPI | 1497744213 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 10/14/2005 |
Hospital and facility affiliations
Facilities where Edward Ryter, 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.
Baystate Medical Practices Inc
South Hadley, MA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Massachusetts BORIM 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~38K Massachusetts medical licensees in 2023 - they are NOT specific to Edward Ryter, MD. To verify Edward Ryter, MD's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Edward Ryter, MD - brand share 14.0%
Internal Medicine Physician average
14% brand-name claims vs 85% generic, on 4,937 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.
4,937
Total Claims
$513K
Total Drug Cost
389
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 10,437
- Total Day Supply
- 306,627
- Brand vs Generic
- 14% brand / 85% generic
- Brand Drug Cost
- $412K
- Generic Drug Cost
- $93K
- Opioid Claims
- 135 (2.7% rate)
- Antibiotic Claims
- 39
Patient Demographics
- Average Patient Age
- 72.0 years
- Avg HCC Risk Score
- 1.11
- Gender Split
- 45% female / 55% male
- Age Distribution
- <65: 59, 65-74: 182, 75-84: 104, 85+: 44
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Edward Ryter, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
394 claims
- Amlodipine Besylate
Amlodipine Besylate
320 claims
- Lisinopril
Lisinopril
247 claims
- Losartan Potassium
Losartan Potassium
160 claims
- Levothyroxine Sodium 135
Levothyroxine Sodium
135 claims
- Omeprazole 132
Omeprazole
132 claims
- Simvastatin 116
Simvastatin
116 claims
- Hydrochlorothiazide 114
Hydrochlorothiazide
114 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 394 |
| Amlodipine Besylate | 320 |
| Lisinopril | 247 |
| Losartan Potassium | 160 |
| Levothyroxine Sodium | 135 |
| Omeprazole | 132 |
| Simvastatin | 116 |
| Hydrochlorothiazide | 114 |
| Metformin Hcl | 113 |
| Escitalopram Oxalate | 112 |
* 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 Edward Ryter, MD fits within the Internal Medicine Physician landscape nationally.
172,737
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Edward Ryter, MD's 4,937 claims are above the specialty average of 2,716.
Nationwide Internal Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Ryter, both outside Massachusetts so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Internal Medicine Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Ryter.
One of 7,862 Internal Medicine Physician providers enrolled in Massachusetts, 5 are shown here.
Dr. Nawal Aamir
MD
Worcester, MA
Zainab Abbas
Worcester, MA
Dr. Nooshin Abbasi
MD MPH
Newton, MA
Dr. Lauren Abbate
MD
Boston, MA
Dr. Bassima Abdallah
MD
Boston, MA
Compare Internal Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Edward Ryter, MD's specialty? ▼
Edward Ryter, MD specializes in Internal Medicine Physician and practices in South Hadley, Massachusetts. Credentials: MD.
How much does Edward Ryter, MD prescribe under Medicare Part D? ▼
In 2023, Edward Ryter, MD wrote 4,937 Medicare Part D claims totaling $513K in drug costs for 389 beneficiaries.
Where is Edward Ryter, MD located? ▼
Edward Ryter, MD is located at 470 GRANBY ROAD, South Hadley, MA, 01075. Phone: (413) 533-3926.
What is Edward Ryter, MD's NPI number? ▼
Edward Ryter, MD's National Provider Identifier (NPI) is 1497744213, issued on 10/14/2005.
Does Edward Ryter, MD prescribe more brand-name or generic drugs? ▼
Edward Ryter, MD's prescribing is 14% brand-name and 85% generic drugs by claim count, with $412K in brand drug costs.
Does Edward Ryter, MD prescribe opioids? ▼
Yes, Edward Ryter, MD had 135 opioid claims in 2023 with an opioid prescribing rate of 2.7%.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,737 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 Edward Ryter, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Edward Ryter, MD's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Edward Ryter, MD accept Medicare? ▼
Edward Ryter, MD appears in CMS Medicare data with 4,937 Part D claims and 389 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Edward Ryter, MD's credentials? ▼
Edward Ryter, MD's NPI is 1497744213 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
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.