NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1427004605 MD
Verify on CMS → Kathleen Ryan, MD
Internal Medicine Physician in Philadelphia, Pennsylvania.
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
981
Medicare Part D claims · 79 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
85%
generic claims · 13% 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
Kathleen Ryan, MD filed 981 Medicare Part D claims in 2023 as an Internal Medicine Physician in Philadelphia, Pennsylvania, prescribing 85% generic.
- 981
- Part D claims, 2023
- 85%
- generic prescribing
- ≥75th
- 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 Kathleen Ryan, 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 1427004605), first enumerated 05/26/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 981 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
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- State context
State board disciplinary context
Pennsylvania statewide board action statistics are published annually — these figures describe aggregate state activity, not Kathleen Ryan, MD's individual license status. Verify directly with the state medical board.
Source: PA-BOM annual report 2023
- 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 1427004605 · Internal Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-LIGHT · BOOK-MID · PHOTO-ENUM
- NPI-10 1427004605
- ENUM-LEGACY 2006
- TAX-MEGA 173K Internal Medicine
- RX-LIGHT 981
- BOOK-MID 8,542 in Pennsylvania
- PHOTO-ENUM Alfredo Dosdos · 2006
Kathleen Ryan, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
981 ≥ 75th percentile 75% 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-eligible specialty (heuristic, not verified)
Kathleen Ryan, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Kathleen Ryan, MD?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
981 64% vs specialty avg
Specialty distribution in Pennsylvania
How Internal Medicine Physician compares to other specialties among Pennsylvania 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 | 1427004605 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 05/26/2006 |
License & disciplinary context - Pennsylvania PA-BOM 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 ~45K Pennsylvania medical licensees in 2023 - they are NOT specific to Kathleen Ryan, MD. To verify Kathleen Ryan, MD's current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases
PA-BOM 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 Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Kathleen Ryan, MD - brand share 13.0%
Internal Medicine Physician average
13% brand-name claims vs 85% generic, on 981 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.
981
Total Claims
$79K
Total Drug Cost
79
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,242
- Total Day Supply
- 66,065
- Brand vs Generic
- 13% brand / 85% generic
- Brand Drug Cost
- $49K
- Generic Drug Cost
- $29K
- Opioid Claims
- 17 (1.7% rate)
Patient Demographics
- Average Patient Age
- 71.5 years
- Avg HCC Risk Score
- 1.41
- Gender Split
- 70% female / 30% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Kathleen Ryan, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Rosuvastatin Calcium
Rosuvastatin Calcium
45 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
36 claims
- Metoprolol Succinate
Metoprolol Succinate
36 claims
- Montelukast Sodium
Montelukast Sodium
35 claims
- Atorvastatin Calcium
Atorvastatin Calcium
34 claims
- Gabapentin
Gabapentin
33 claims
- Omeprazole
Omeprazole
33 claims
- Pravastatin Sodium
Pravastatin Sodium
33 claims
| Drug | Claims |
|---|---|
| Rosuvastatin Calcium | 45 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 36 |
| Metoprolol Succinate | 36 |
| Montelukast Sodium | 35 |
| Atorvastatin Calcium | 34 |
| Gabapentin | 33 |
| Omeprazole | 33 |
| Pravastatin Sodium | 33 |
| Levothyroxine Sodium | 30 |
| Eliquis Apixaban | 29 |
* 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 Kathleen Ryan, 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
Kathleen Ryan, MD's 981 claims are below the specialty average of 2,716.
Nationwide Internal Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Ryan, both outside Pennsylvania so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Internal Medicine Physician Providers in Pennsylvania
Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as Ryan.
One of 8,542 Internal Medicine Physician providers enrolled in Pennsylvania, 5 are shown here.
Dr. Erin Aakhus
M.D.
Philadelphia, PA
Dr. Muhammad Aamir
MD
Allentown, PA
Dr. Saira Aamir
MD
York, PA
Dr. John Aaron
MD
West Grove, PA
Dr. Todd Aaron
MD
Philadelphia, PA
Compare Internal Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Kathleen Ryan, MD's specialty? ▼
Kathleen Ryan, MD specializes in Internal Medicine Physician and practices in Philadelphia, Pennsylvania. Credentials: MD.
How much does Kathleen Ryan, MD prescribe under Medicare Part D? ▼
In 2023, Kathleen Ryan, MD wrote 981 Medicare Part D claims totaling $79K in drug costs for 79 beneficiaries.
Where is Kathleen Ryan, MD located? ▼
Kathleen Ryan, MD is located at 219 N BROAD ST, Philadelphia, PA, 19107. Phone: (215) 762-5188.
What is Kathleen Ryan, MD's NPI number? ▼
Kathleen Ryan, MD's National Provider Identifier (NPI) is 1427004605, issued on 05/26/2006.
Does Kathleen Ryan, MD prescribe more brand-name or generic drugs? ▼
Kathleen Ryan, MD's prescribing is 13% brand-name and 85% generic drugs by claim count, with $49K in brand drug costs.
Does Kathleen Ryan, MD prescribe opioids? ▼
Yes, Kathleen Ryan, MD had 17 opioid claims in 2023 with an opioid prescribing rate of 1.7%.
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 Kathleen Ryan, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Kathleen Ryan, MD's most frequently prescribed drugs include Rosuvastatin Calcium, Albuterol Sulfate Hfa, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Kathleen Ryan, MD accept Medicare? ▼
Kathleen Ryan, MD appears in CMS Medicare data with 981 Part D claims and 79 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Kathleen Ryan, MD's credentials? ▼
Kathleen Ryan, MD's NPI is 1427004605 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.