James Stewart Blachly, M.D.
Hematology (Internal Medicine) Physician · Columbus, OH
James Stewart Blachly, M.D. is a hematology (internal medicine) physician with a practice address in Columbus, Ohio, and NPI 1679779284, issued on Jun 22, 2007. Check the license (Ohio 35097913, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- James Stewart Blachly
- Credential
- M.D.
- Primary taxonomy
- Hematology (Internal Medicine) Physician 207RH0000X
- License number
- 35097913 OH
Self-reported in NPPES; status is on the state search - Practice location
- 460 W 10TH Ave, Columbus, OH 43210
- Phone
- (614) 293-3196
- Enumerated
- Jun 22, 2007
- Record last updated
- Feb 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (614) 293-4812
- Medicaid ID
- 0105637 OH
- Medicare enrollment
- Enrolled (PECOS I20140715001526); accepts Medicare assignment
- Medical or professional school
- University Of Arkansas College Of Medicine, 2007
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology (internal medicine) physician records → All 89 in Ohio → Look up another NPI →
Also registered at 460 W 10TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amina Abdule, APRN-CNPFamily Nurse Practitioner1316346786
- Megan Adelman, PA-CPhysician Assistant1437355492
- Hailey AdlerPhysician Assistant1740024843
- Taimoor Adnan, M.D.Internal Medicine Physician1225481088
- Laura Adorni, C.N.P.Nurse Practitioner1295181832
- Mariam Ahmed, APRN-CNPAcute Care Nurse Practitioner1609612035
Verify James Stewart Blachly in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35097913Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% fewer Medicare Part D claims than the average hematology (internal medicine) physician in 2024
281 Medicare Part D claims for 45 beneficiaries, against an average of 496 among the 1,036 providers of this specialty who prescribed in Part D. Brand-name drugs were 72% of claims.
Most prescribed
- Venclexta62 claims
- Tibsovo24 claims
- Onureg21 claims
- Sprycel17 claims
- Imatinib Mesylate16 claims
- Acyclovir15 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.
The MIPS final score for 2023 (Medicare payment program): 95.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $153.98
1 payment: food and beverage; the largest payer was Astellas Pharma US Inc. The 721 providers of this specialty with any payment received $13,778.35 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
- Osu Internal Medicine LLCDublin, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Stewart Blachly among 89 hematology (internal medicine) physician records in Ohio
James Stewart Blachly, M.D. is one of 89 hematology (internal medicine) physician records with a practice address in Ohio. 92% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 21% of them.
- NPI issued2007 · 21% of these records are older, 71% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 87% of these records are
- Graduated2007 · median 2009 among the 77 with a school on file
- Record last updated2021 · 22% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology (Internal Medicine) Physician providers in Ohio
There are 89 hematology (internal medicine) physician records in Ohio.
All 89 in Ohio → Every provider in Columbus → Hematology (Internal Medicine) Physician nationwide →
The 8 hematology (internal medicine) physician records with the nearest ZIP codes
- Robert Baiocchi, M.D.Columbus, OH 432101770599755
- Don Benson, MDColumbus, OH 432101003862236
- Uma Borate, MDColumbus, OH 432101619182946
- Michael Caligiuri, M.D.Columbus, OH 432101669488565
- Spero Cataland, M.D.Columbus, OH 432101881602209
- Beth Christian, M.D.Columbus, OH 432101194940783
- Steven Devine, M.D.Columbus, OH 432101124036579
- Michael Grever, MDColumbus, OH 432101215942735
Common questions
What is James Stewart Blachly, M.D.'s NPI number?
James Stewart Blachly, M.D.'s National Provider Identifier (NPI) is 1679779284, issued on Jun 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is James Stewart Blachly, M.D. located?
The NPPES record lists a practice address at 460 W 10TH Ave, Columbus, OH, 43210. Phone: (614) 293-3196. Providers update this record themselves, so call before visiting.
How can I verify James Stewart Blachly, M.D.'s license?
NPPES lists Ohio license number 35097913, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does James Stewart Blachly, M.D. prescribe under Medicare Part D?
In 2024, James Stewart Blachly, M.D. had 281 Medicare Part D claims for 45 beneficiaries; the average among hematology (internal medicine) physician prescribers was 496. Part D covers Medicare prescriptions only.
What is James Stewart Blachly, M.D.'s MIPS final score?
The 2023 MIPS final score is 95.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.