2026 NPPES data Radiation Oncology Physician NPI 1235549031 M.D.
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AMAR SRIVASTAVA, M.D.

Radiation Oncology Physician in PORTLAND, Oregon. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
236
Medicare Part D claims · 79 beneficiaries · Radiation Oncology Physician avg: 186
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: AMAR SRIVASTAVA, M.D. is a Radiation Oncology Physician ([object Object]) practicing in PORTLAND, Oregon with a Medicare Part D prescribing footprint of 236 claims across 79 beneficiaries — 8% brand-name prescribing .

What stands out: AMAR SRIVASTAVA, M.D. filed 236 Medicare Part D claims in 2023 across PORTLAND, Oregon. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

AMAR SRIVASTAVA, M.D. 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).

AMAR SRIVASTAVA, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 05/01/2014

NPI 1235549031

Primary specialty

Radiation Oncology Physician

Mid-sized

6,018 US NPIs in this specialty

Medicare Part D claims

236 27% vs specialty avg

2023 prescription claims

Specialty avg: 186

Specialty distribution in Oregon

How Radiation Oncology Physician compares to other specialties among Oregon providers

Oregon providers

Radiation Oncology Physician share within Oregon

1. Radiation Oncology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Radiation Oncology Physician share within Oregon

Specialty board-certification context

Estimated specialty board-certified rate — Radiation Oncology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Radiation Oncology Physician ABMS/AOA estimate

Est. board-certified rate (Radiation Oncology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Radiation Oncology Physician) — ABMS / AOA estimate

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).

AMAR SRIVASTAVA, M.D. is a Radiation Oncology Physician provider practicing in PORTLAND, Oregon, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1235549031. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

AMAR SRIVASTAVA, M.D. appears in the CMS NPPES registry as a Radiation Oncology Physician provider holding M.D. credentials at 4805 NE GLISAN ST, GARDEN LEVEL, PORTLAND, OR, 97213, with a listed phone of (503) 215-6029. NPI 1235549031 was issued on 05/01/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SRIVASTAVA most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 236 prescription claims written by this provider, covering 79 Medicare beneficiaries and totaling roughly $6K in drug spend, split 8% brand-name and 92% generic by claim count, with an opioid prescribing rate of 17.8%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Radiation Oncology Physician is a mid-sized specialty nationwide, with 6,018 enrolled providers across 52 states and an average of 186 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

4805 NE GLISAN ST, GARDEN LEVEL
PORTLAND, OR 97213

Provider Details

NPI 1235549031
Specialty Radiation Oncology Physician
Credentials M.D.
Gender Male
NPI Issued 05/01/2014

Hospital and facility affiliations

Facilities where AMAR SRIVASTAVA, M.D. 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.

THE OREGON CLINIC, PC
PORTLAND, OR

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 · Generic-heavy

AMAR SRIVASTAVA, M.D. — brand share 8.0%
Specialty average (est.)

8% brand-name claims vs 92% generic, on 236 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.

236
Total Claims
$6K
Total Drug Cost
79
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
309
Total Day Supply
7,057
Brand vs Generic
8% brand / 92% generic
Brand Drug Cost
$2K
Generic Drug Cost
$4K
Opioid Claims
42 (17.8% rate)

Patient Demographics

Average Patient Age
72.6 years
Avg HCC Risk Score
2.06
Gender Split
39% female / 61% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Oxycodone Hcl
28
Tamsulosin Hcl
28
Dexamethasone
20
Lorazepam
20
Levothyroxine Sodium
19
Lidocaine Hcl Viscous
Lidocaine Hcl
15
Ondansetron Odt
Ondansetron
14
Gabapentin
13

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Radiation Oncology Physician Overview

How AMAR SRIVASTAVA, M.D. fits within the Radiation Oncology Physician landscape nationally.

6,018
Radiation Oncology Physician Providers in US
52
States with Radiation Oncology Physician
186
Avg Claims per Provider

AMAR SRIVASTAVA, M.D.'s 236 claims are above the specialty average of 186.

Nearby Radiation Oncology Physician Providers in Oregon

Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as SRIVASTAVA.

Compare Radiation Oncology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is AMAR SRIVASTAVA, M.D.'s specialty?
AMAR SRIVASTAVA, M.D. specializes in Radiation Oncology Physician and practices in PORTLAND, Oregon. Credentials: M.D..
How much does AMAR SRIVASTAVA, M.D. prescribe under Medicare Part D?
In 2023, AMAR SRIVASTAVA, M.D. wrote 236 Medicare Part D claims totaling $6K in drug costs for 79 beneficiaries.
Where is AMAR SRIVASTAVA, M.D. located?
AMAR SRIVASTAVA, M.D. is located at 4805 NE GLISAN ST, GARDEN LEVEL, PORTLAND, OR, 97213. Phone: (503) 215-6029.
What is AMAR SRIVASTAVA, M.D.'s NPI number?
AMAR SRIVASTAVA, M.D.'s National Provider Identifier (NPI) is 1235549031, issued on 05/01/2014.
Does AMAR SRIVASTAVA, M.D. prescribe more brand-name or generic drugs?
AMAR SRIVASTAVA, M.D.'s prescribing is 8% brand-name and 92% generic drugs by claim count, with $2K in brand drug costs.
Does AMAR SRIVASTAVA, M.D. prescribe opioids?
Yes, AMAR SRIVASTAVA, M.D. had 42 opioid claims in 2023 with an opioid prescribing rate of 17.8%.
How many Radiation Oncology Physician providers are there in the US?
There are 6,018 Radiation Oncology Physician providers across 52 states in the US. The average Radiation Oncology Physician provider writes 186 Medicare Part D claims per year.
What drugs does AMAR SRIVASTAVA, M.D. prescribe most often?
Based on 2023 Medicare Part D data, AMAR SRIVASTAVA, M.D.'s most frequently prescribed drugs include Oxycodone Hcl, Tamsulosin Hcl, Dexamethasone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does AMAR SRIVASTAVA, M.D. accept Medicare?
AMAR SRIVASTAVA, M.D. appears in CMS Medicare data with 236 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 AMAR SRIVASTAVA, M.D.'s credentials?
AMAR SRIVASTAVA, M.D.'s NPI is 1235549031 with credentials M.D.. 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

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