Essam Maasarani, M.D.
Nephrology Physician · Long Beach, CA
Essam Maasarani, M.D. is a nephrology physician with a practice address in Long Beach, California, and NPI 1366448136, issued on Jun 24, 2005. Check the license (California A045446, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Essam Maasarani
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- A045446 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3780 Kilroy Airport Way Ste 115, Long Beach, CA 90806
- Phone
- (562) 595-7426
- Enumerated
- Jun 24, 2005
- Record last updated
- Aug 13, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (562) 989-3054
- Medicaid ID
- 00A454460 CA
- Medicare enrollment
- Enrolled (PECOS I20100922000789); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 3780 Kilroy Airport Way Ste 115
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alan Erlbaum, M.D.Nephrology Physician1255337028
- John Hsieh, M.D.Nephrology Physician1659376606
- Alice Park, M.D.Nephrology Physician1649336298
- Lei Win, M.DNephrology Physician1124436001
- Karen Zoller, M.D.Nephrology Physician1508861535
Verify Essam Maasarani in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A045446Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% more Medicare Part D claims than the average nephrology physician in 2024
1,912 Medicare Part D claims for 152 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate173 claims
- Calcitriol148 claims
- Losartan Potassium108 claims
- Hydralazine Hcl106 claims
- Prosol101 claims
- Sevelamer Carbonate92 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): 7 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: $63.16
3 payments; by number, the most common kind was food and beverage; the largest payer was Ardelyx, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 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
- Coast Nephrology Medical Group Inc.Long Beach, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Essam Maasarani among 1,468 nephrology physician records in California
Essam Maasarani, M.D. is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1981 · median 2001 among the 1,128 with a school on file
- Record last updated2018 · 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 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Long Beach → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Chonlada Chivangkul, M.D.Long Beach, CA 908061184063570
- Alan Erlbaum, M.D.Long Beach, CA 908061255337028
- John Hsieh, M.D.Long Beach, CA 908061659376606
- Arvind Mehta, MDLong Beach, CA 908061518985613
- Alice Park, M.D.Long Beach, CA 908061649336298
- Sapna Patel, MDLong Beach, CA 908061710140561
- Nourma Sajid, M.D.Long Beach, CA 908061952808925
- Ngoc-Tram Tran, D.OLong Beach, CA 908061003052739
Common questions
What is Essam Maasarani, M.D.'s NPI number?
Essam Maasarani, M.D.'s National Provider Identifier (NPI) is 1366448136, issued on Jun 24, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Essam Maasarani, M.D. located?
The NPPES record lists a practice address at 3780 Kilroy Airport Way Ste 115, Long Beach, CA, 90806. Phone: (562) 595-7426. Providers update this record themselves, so call before visiting.
How can I verify Essam Maasarani, M.D.'s license?
NPPES lists California license number A045446, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Essam Maasarani, M.D. prescribe under Medicare Part D?
In 2024, Essam Maasarani, M.D. had 1,912 Medicare Part D claims for 152 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
What is Essam Maasarani, M.D.'s MIPS final score?
The 2023 MIPS final score is 7 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.