Merrill Ralph Nisam, MD
Pulmonary Disease Physician · Larkspur, CA
Merrill Ralph Nisam, MD is a pulmonary disease physician with a practice address in Larkspur, California, and NPI 1205824067, issued on Oct 6, 2005. Check the license (California A45217, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Merrill Ralph Nisam
- Credential
- MD
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- A45217 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1100 Larkspur Landing Cir Ste 10, Larkspur, CA 94939
- Phone
- (415) 924-1214
- Enumerated
- Oct 6, 2005
- Record last updated
- Dec 16, 2025
- Fax
- (415) 924-1375
- Medicaid ID
- ZZZ79929Z CA
- Medicare enrollment
- Enrolled (PECOS I20040102000689); may accept Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 1980
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 1,443 in California → Look up another NPI →
Also registered at 1100 Larkspur Landing Cir Ste 10
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Injil Abubakar, MDFamily Medicine Physician1013095041
- Saba Bagewadi, M.D.Pediatrics Physician1588059059
- Anjuli Brighton, MDPulmonary Disease Physician1407110588
- Robert DorisInternal Medicine Physician1528647096
- Grace Fong, D.O.Family Medicine Physician1952559585
- Maria Garcia-Ball, RNFamily Nurse Practitioner1972987519
Verify Merrill Ralph Nisam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A45217Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
1,316 Medicare Part D claims for 294 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 62% of claims.
Most prescribed
- Spiriva Respimat154 claims
- Symbicort111 claims
- Albuterol Sulfate Hfa97 claims
- Montelukast Sodium76 claims
- Breyna73 claims
- Breztri Aerosphere73 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: $280.76
3 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 8,806 providers of this specialty with any payment received $5,159.88 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
- Regents Univ OF California UcsfSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Merrill Ralph Nisam among 1,443 pulmonary disease physician records in California
Merrill Ralph Nisam, MD is one of 1,443 pulmonary disease physician records with a practice address in California. 84% 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, 93% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1980 · median 2002 among the 1,061 with a school on file
- Record last updated2025 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 pulmonary disease physician records list a practice address in Larkspur
They are 4 of the 291 NPPES records with a practice address in Larkspur, and 1,443 pulmonary disease physician records in California.
All 1,443 in California → Every provider in Larkspur → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Anjuli Brighton, MDLarkspur, CA 949391407110588
- Michelle Low, DOLarkspur, CA 949391285294322
- Sheeja Schuster, MD/MPHLarkspur, CA 949391679912828
- Lewis Lehman, MDMill Valley, CA 949411255616314
- Darya Soto, MDNovato, CA 949451982656013
- Guy Livnat, MDGreenbrae, CA 949041881682656
- Fred Hom, MDSan Rafael, CA 949031326130071
- Christian Gronbeck, MDSan Rafael, CA 949011205472339
Common questions
What is Merrill Ralph Nisam, MD's NPI number?
Merrill Ralph Nisam, MD's National Provider Identifier (NPI) is 1205824067, issued on Oct 6, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Merrill Ralph Nisam, MD located?
The NPPES record lists a practice address at 1100 Larkspur Landing Cir Ste 10, Larkspur, CA, 94939. Phone: (415) 924-1214. Providers update this record themselves, so call before visiting.
How can I verify Merrill Ralph Nisam, MD's license?
NPPES lists California license number A45217, 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 Merrill Ralph Nisam, MD prescribe under Medicare Part D?
In 2024, Merrill Ralph Nisam, MD had 1,316 Medicare Part D claims for 294 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. 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.