Blair B. Irwin, MD
Hematology & Oncology Physician · Tacoma, WA
Blair B. Irwin, MD is a hematology & oncology physician with a practice address in Tacoma, Washington, and NPI 1720221153, issued on Apr 15, 2009. Check the license (Washington MD60535985, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Blair B. Irwin
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- MD60535985 WA
I76950936252782 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 1003 S 5TH St FL 4, Tacoma, WA 98405
- Phone
- (253) 403-1677
- Enumerated
- Apr 15, 2009
- Record last updated
- Jul 28, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150805009398); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 476 in Washington → Look up another NPI →
Verify Blair B. Irwin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD60535985Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,529 Medicare Part D claims for 169 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 347 claims were for opioids.
Most prescribed
- Oxycodone Hcl209 claims
- Morphine Sulfate Er88 claims
- Gabapentin64 claims
- Dexamethasone61 claims
- Tamoxifen Citrate53 claims
- Acyclovir51 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $278.40
3 payments; by number, the most common kind was long term medical supply or device loan; the largest payer was Novartis Pharmaceuticals Corporation. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Multicare Health SystemTacoma, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Blair B. Irwin among 476 hematology & oncology physician records in Washington
Blair B. Irwin, MD is one of 476 hematology & oncology physician records with a practice address in Washington. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 52% of them.
- NPI issued2009 · 52% of these records are older, 44% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2009 · median 2006 among the 294 with a school on file
- Record last updated2015 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Washington
There are 476 hematology & oncology physician records in Washington.
All 476 in Washington → Every provider in Tacoma → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Jorge Chaves, M.D.Tacoma, WA 984051265610752
- Min-Chun Chen, M.D.Tacoma, WA 984051811913528
- Robert D'Acquisto, M.D.Tacoma, WA 984051952395832
- Elizabeth Meyering, M.D.Tacoma, WA 984051508053695
- Daniel Moore, MDTacoma, WA 984051528054228
- Ndegwa Njuguna, M.D.Tacoma, WA 984051851577522
- Joseph Rosales, MDTacoma, WA 984051457300303
- Francis Senecal, M.D.Tacoma, WA 984051417046236
Common questions
What is Blair B. Irwin, MD's NPI number?
Blair B. Irwin, MD's National Provider Identifier (NPI) is 1720221153, issued on Apr 15, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Blair B. Irwin, MD located?
The NPPES record lists a practice address at 1003 S 5TH St FL 4, Tacoma, WA, 98405. Phone: (253) 403-1677. Providers update this record themselves, so call before visiting.
How can I verify Blair B. Irwin, MD's license?
NPPES lists Washington license number MD60535985, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Blair B. Irwin, MD prescribe under Medicare Part D?
In 2024, Blair B. Irwin, MD had 1,529 Medicare Part D claims for 169 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.