Mary Chrissen Loy Blackman, OD
Optometrist · New York, NY
Mary Chrissen Loy Blackman, OD is an optometrist with a practice address in New York, New York, and NPI 1336828680, issued on Jul 13, 2023. Check the license (New York 009801, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Chrissen Loy Blackman
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 009801 NY
Self-reported in NPPES; status is on the state search - Practice location
- 150 Broadway RM 1401, New York, NY 10038
- Phone
- (212) 233-2344
- Enumerated
- Jul 13, 2023
- Record last updated
- Jul 13, 2023
- Entity
- Type 1 · individual
8 nearest optometrist records → All 3,535 in New York → Look up another NPI →
Also registered at 150 Broadway RM 1401
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bess Fung, MDStudent in an Organized Health Care Education/Training Program1588297725
- Gerald Shepps, MDGlaucoma Specialist (Ophthalmology) Physician1538277603
Verify Mary Chrissen Loy Blackman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license 009801Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% fewer Medicare Part D claims than the average optometrist in 2024
131 Medicare Part D claims for 66 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 36% of claims.
Most prescribed
- Tobramycin-Dexamethasone34 claims
- Timolol Maleate15 claims
- Latanoprost12 claims
- Restasis12 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: $168.39
7 payments; by number, the most common kind was food and beverage; the largest payer was Tarsus Pharmaceuticals, Inc. The 34,453 providers of this specialty with any payment received $769.99 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.
Mary Chrissen Loy Blackman among 3,535 optometrist records in New York
Mary Chrissen Loy Blackman, OD is one of 3,535 optometrist records with a practice address in New York. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 89% of them.
- NPI issued2023 · 89% of these records are older, 8% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileNo · 47% of these records are
- Record last updated2023 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Optometrist providers in New York
There are 3,535 optometrist records in New York.
All 3,535 in New York → Every provider in New York → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Nisha Chaudhari, ODNew York, NY 100381568072379
- Jamesina Chim, O.D.New York, NY 100381700955374
- Jacqueline JoyNew York, NY 100381891516571
- Eric Lau, O.D.New York City, NY 100381659671584
- Fazeda Mohammed, O.DNew York, NY 100381861522815
- Edward Ruvio, ODNew York, NY 100381093852584
- Neil Schafran, O.D.New York, NY 100381497837231
- Sai Ka Tsang, ODNew York, NY 100381013552421
Common questions
What is Mary Chrissen Loy Blackman, OD's NPI number?
Mary Chrissen Loy Blackman, OD's National Provider Identifier (NPI) is 1336828680, issued on Jul 13, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Mary Chrissen Loy Blackman, OD located?
The NPPES record lists a practice address at 150 Broadway RM 1401, New York, NY, 10038. Phone: (212) 233-2344. Providers update this record themselves, so call before visiting.
How can I verify Mary Chrissen Loy Blackman, OD's license?
NPPES lists New York license number 009801, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Chrissen Loy Blackman, OD prescribe under Medicare Part D?
In 2024, Mary Chrissen Loy Blackman, OD had 131 Medicare Part D claims for 66 beneficiaries; the average among optometrist prescribers was 277. 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.