NPI registry status
Active
2026 NPPES data Oncology Pharmacist NPI 1023655800 PHARMD
Verify on CMS → Riyo Rajan, PHARMD
Oncology Pharmacist in Annapolis, Maryland.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,916 in Oncology Pharmacist, 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.
What the federal data shows
Riyo Rajan, PHARMD is an Oncology Pharmacist in Annapolis, Maryland, listed in the federal CMS National Provider Identifier registry.
- #187
- Oncology Pharmacist rank among Maryland specialties
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 Riyo Rajan, PHARMD
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1023655800), first enumerated 11/29/2019.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
Source: CMS Part D Prescriber PUF
- 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.
Compare Rajan with other Oncology Pharmacist providers
Same primary specialty, same federal CMS NPPES roster.
Also enrolled in Maryland
- Dr. Leslie Anforth, PHARMD Bethesda, MD
- Dr. Mikhail Arthur, PHARMD Gaithersburg, MD
- Dr. Dina Benani, PHARMD Baltimore, MD
- Dr. Amy Bryk, PHARM.D Baltimore, MD
- Baochau Bui, PHARM-D Largo, MD
- Danny Carter, R.PH Pikesville, MD
Other specialties in Annapolis: Physical Therapist (212) · Clinical Social Worker (193) · Behavior Technician (186) · Speech-Language Pathologist (180)
CMS NPPES provider registry desk
NPI 1023655800 · Oncology Pharmacist
NPI-10 · ENUM-RECENT · TAX-NARROW · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1023655800
- ENUM-RECENT 2019
- TAX-NARROW 1,916
- RX-NONE No Part D
- BOOK-THIN 36 in Maryland
- PHOTO-ENUM Julia Kerr · 2019
What does the federal data show about Riyo Rajan, PHARMD?
Quality data not reportedPrimary specialty
Oncology Pharmacist
Specialty distribution in Maryland
How Oncology Pharmacist compares to other specialties among Maryland 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 Oncology Pharmacist. 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 | 1023655800 |
|---|---|
| Specialty | Oncology Pharmacist |
| Credentials | PHARMD |
| Gender | Male |
| NPI Issued | 11/29/2019 |
Oncology Pharmacist Overview
How Riyo Rajan, PHARMD fits within the Oncology Pharmacist landscape nationally.
1,916
Oncology Pharmacist Providers in US
51
States with Oncology Pharmacist
157
Avg Claims per Provider
Nationwide Oncology Pharmacist peers with similar MIPS or enrollment year
Two federal-record peer sets for Rajan, both outside Maryland so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2019)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Oncology Pharmacist Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Rajan.
One of 36 Oncology Pharmacist providers enrolled in Maryland, 11 are shown on this page.
Dr. Jennie Chang
PHARM.D.
Silver Spring, MD
Dr. Connie Cheng
PHARMD
Silver Spring, MD
Satinder Choudhary
Baltimore, MD
Augustine Durso
R.PH.
Baltimore, MD
Renee Farmer
Baltimore, MD
Compare Oncology Pharmacist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Riyo Rajan, PHARMD's specialty? ▼
Riyo Rajan, PHARMD specializes in Oncology Pharmacist and practices in Annapolis, Maryland. Credentials: PHARMD.
Where is Riyo Rajan, PHARMD located? ▼
Riyo Rajan, PHARMD is located at 2001 MEDICAL PKWY, Annapolis, MD, 21401. Phone: (443) 481-4157.
What is Riyo Rajan, PHARMD's NPI number? ▼
Riyo Rajan, PHARMD's National Provider Identifier (NPI) is 1023655800, issued on 11/29/2019.
How many Oncology Pharmacist providers are there in the US? ▼
There are 1,916 Oncology Pharmacist providers across 51 states in the US. The average Oncology Pharmacist provider writes 157 Medicare Part D claims per year.
Does Riyo Rajan, PHARMD accept Medicare? ▼
Riyo Rajan, PHARMD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Riyo Rajan, PHARMD's credentials? ▼
Riyo Rajan, PHARMD's NPI is 1023655800 with credentials PHARMD. 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.
- 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.