Merrill Nisam, MD
NPI 1205824067 · Pulmonary Disease Physician · Larkspur, CA
Enrolled with Medicare as Practitioner - Critical Care (intensivists) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Merrill Nisam, MD is a Pulmonary Disease Physician provider in Larkspur, CA (NPI 1205824067).
Provider details
- NPI number
- 1205824067
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A45217 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
882 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 213 | $104 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 138 | $66 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 103 | $145 |
| New Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 15 Minutes Or More99202 | 78 | $84 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 78 | $126 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tiotropium Bromidebrand: Spiriva Respimat | 154 | 38 |
| Budesonide/Formoterol Fumaratebrand: Symbicort | 111 | 41 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 97 | 60 |
| Montelukast Sodium | 76 | 31 |
| Budesonide/Formoterol Fumaratebrand: Breyna | 73 | 27 |
| Budesonide/Glycopyr/Formoterolbrand: Breztri Aerosphere | 73 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$281 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-06
- Last updated
- 2025-12-16
- Certified
- 2025-12-16
Frequently asked questions
- What is Merrill Nisam's NPI number?
- Merrill Nisam's National Provider Identifier (NPI) is 1205824067, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Merrill Nisam's specialty?
- Merrill Nisam is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Merrill Nisam located?
- Merrill Nisam's practice location on file with NPPES is 1100 Larkspur Landing Cir Ste 10, Larkspur, CA 94939-1836.
- What is Merrill Nisam's phone number?
- The practice phone number listed in the NPPES registry for Merrill Nisam is (415) 924-1214.
- Does Merrill Nisam accept Medicare?
- Merrill Nisam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Merrill Nisam's NPI active?
- Yes — Merrill Nisam's NPI (1205824067) is active in the NPPES registry as of the last update on 2025-12-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.