Rocco J. Massimiano, PHARM.D.
Pharmacist · San Bernardino, CA
Rocco J. Massimiano, PHARM.D. is a pharmacist with a practice address in San Bernardino, California, and NPI 1538688486, issued on Sep 12, 2017. Check the license (California 42109, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Rocco J. Massimiano
- Credential
- PHARM.D.
- Primary taxonomy
- Pharmacist 183500000X
- License number
- 42109 CA
Self-reported in NPPES; status is on the state search - Practice location
- 250 S G St, San Bernardino, CA 92410
- Phone
- (909) 771-2990
- Enumerated
- Sep 12, 2017
- Record last updated
- Sep 12, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (909) 771-2889
- Entity
- Type 1 · individual
8 nearest pharmacist records → All 32,533 in California → Look up another NPI →
Also registered at 250 S G St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Rian Blackwood, DOFamily Medicine Physician1093456915
Verify Rocco J. Massimiano in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 42109Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 100% of the cost of the top drugs
41 Medicare Part D claims for 35 beneficiaries, against an average of 119 among the 28,524 providers of this specialty who prescribed in Part D. Brand-name drugs were 98% of claims.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Shingrix15 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.
Rocco J. Massimiano among 32,533 pharmacist records in California
Rocco J. Massimiano, PHARM.D. is one of 32,533 pharmacist records with a practice address in California. 15% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 53% of them.
- NPI issued2017 · 53% of these records are older, 39% newer
- In a Medicare fileYes · 15% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2017 · 76% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 183500000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
120 pharmacist records list a practice address in San Bernardino
They are 120 of the 5,645 NPPES records with a practice address in San Bernardino, and 32,533 pharmacist records in California.
All 32,533 in California → Every provider in San Bernardino → Pharmacist nationwide →
The 8 pharmacist records with the nearest ZIP codes
- Nguyen Dao, PHARM.D.San Bernardino, CA 924101417460247
- Phuoc HoangSan Bernardino, CA 924101407445364
- Gregory Imoohi, PHARM.D.San Bernardino, CA 924101558598755
- Anna KimSan Bernardino, CA 924101366085359
- Theresa Taylor, PHARMDSan Bernardino, CA 924101861937138
- Ngoc TranSan Bernardino, CA 924101700351889
- Carolyn Tran, RPHSan Bernardino, CA 924101578162582
- Khue TranSan Bernardino, CA 924101881265999
Common questions
What is Rocco J. Massimiano, PHARM.D.'s NPI number?
Rocco J. Massimiano, PHARM.D.'s National Provider Identifier (NPI) is 1538688486, issued on Sep 12, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Rocco J. Massimiano, PHARM.D. located?
The NPPES record lists a practice address at 250 S G St, San Bernardino, CA, 92410. Phone: (909) 771-2990. Providers update this record themselves, so call before visiting.
How can I verify Rocco J. Massimiano, PHARM.D.'s license?
NPPES lists California license number 42109, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Rocco J. Massimiano, PHARM.D. prescribe under Medicare Part D?
In 2024, Rocco J. Massimiano, PHARM.D. had 41 Medicare Part D claims for 35 beneficiaries; the average among pharmacist prescribers was 119. 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.