NPPES file of Aug 9, 2026

Robert Forbes Robertson, M. D.

Pulmonary Disease Physician · Northridge, CA

Robert Forbes Robertson, M. D. is a pulmonary disease physician with a practice address in Northridge, California, and NPI 1497778385, issued on Jul 25, 2006. Check the license (California A25716, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1497778385
Name
Robert Forbes Robertson
Credential
M. D.
Primary taxonomy
Pulmonary Disease Physician 207RP1001X
License number
A25716 CA
Self-reported in NPPES; status is on the state search
Practice location
17075 Devonshire St, Northridge, CA 91325
Phone
(818) 366-2977
Enumerated
Jul 25, 2006
Record last updated
Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(818) 360-3533
Medicaid ID
00A257160 CA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 17075 Devonshire St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Doris Barizo, DMDGeneral Practice Dentistry1255479721
  2. Fawzy Basta, MDPsychiatry Physician1043394505
  3. Gholamreza Bonabi, M.D.,Specialist1154439743
  4. Michael Borok, MDSpecialist1457379000
  5. Christopher Buttelman, MDInternal Medicine Physician1437128840
  6. Charles Chidsey, M.D.Surgery Physician1831147735

Verify Robert Forbes Robertson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A25716
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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85% fewer Medicare Part D claims than the average pulmonary disease physician in 2024

213 Medicare Part D claims, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 55% of claims.

  1. Robert Robertson213
  2. Specialty average1,425

Most prescribed

  1. Humulin 70/30 Kwikpen37 claims
  2. Tradjenta27 claims
  3. Basaglar Kwikpen U-10023 claims
  4. Albuterol Sulfate20 claims
  5. Atorvastatin Calcium14 claims
  6. Levetiracetam14 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.

Robert Forbes Robertson among 1,443 pulmonary disease physician records in California

Robert Forbes Robertson, M. D. 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 2006, is newer than 7% of them.

  • NPI issued2006 · 7% of these records are older, 51% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileNo · 74% of these records are
  • Record last updated2007 · 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).

Pulmonary Disease Physician providers in California

There are 1,443 pulmonary disease physician records in California.

The 8 pulmonary disease physician records with the nearest ZIP codes

  1. Irfan Khan, M.D.Northridge, CA 913251538370861
  2. Kasra Sedarati, M.D.Northridge, CA 913251851634356
  3. Robert ThompsonNorthridge, CA 913251982675666
  4. Andrea Green, MDNorthridge, CA 913261477620359
  5. Jean Hawkins, MD FCCPNorthridge, CA 913241043328750
  6. Chriselyn Palma, DOPorter Ranch, CA 913261467080572
  7. Ira Strumpf, M.D.Porter Ranch, CA 913261073679130
  8. Rami El-Yousef, M.D.Newhall, CA 913211861750846

Common questions

What is Robert Forbes Robertson, M. D.'s NPI number?

Robert Forbes Robertson, M. D.'s National Provider Identifier (NPI) is 1497778385, issued on Jul 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Robert Forbes Robertson, M. D. located?

The NPPES record lists a practice address at 17075 Devonshire St, Northridge, CA, 91325. Phone: (818) 366-2977. Providers update this record themselves, so call before visiting.

How can I verify Robert Forbes Robertson, M. D.'s license?

NPPES lists California license number A25716, 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 Robert Forbes Robertson, M. D. prescribe under Medicare Part D?

In 2024, Robert Forbes Robertson, M. D. had 213 Medicare Part D claims; 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.