Nicolaas Martin Grobler, MD
Pulmonary Disease Physician · Upland, CA
Nicolaas Martin Grobler, MD is a pulmonary disease physician with a practice address in Upland, California, and NPI 1720154255, issued on Nov 27, 2006. Check the license (California A89047, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nicolaas Martin Grobler
- Credential
- MD
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- A89047 CA
Self-reported in NPPES; status is on the state search - Practice location
- 350 S Euclid Ave Ste C, Upland, CA 91786
- Phone
- (909) 591-6575
- Enumerated
- Nov 27, 2006
- Record last updated
- Nov 16, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00A890470 CA
- Medicare enrollment
- Enrolled (PECOS I20090408000008); accepts Medicare assignment
- 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 350 S Euclid Ave Ste C
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melissa Kramer, FNPPrimary Care Nurse Practitioner1780447706
Verify Nicolaas Martin Grobler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A89047Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10.2 times the Medicare Part D claims of the average pulmonary disease physician in 2024
14,468 Medicare Part D claims for 1,047 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 373 claims were for opioids.
Most prescribed
- Atorvastatin Calcium855 claims
- Amlodipine Besylate640 claims
- Losartan Potassium528 claims
- Levothyroxine Sodium395 claims
- Metformin Hcl386 claims
- Trelegy Ellipta367 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: $1,868.67
82 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. 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
- Inland Physicians Pulmonary ServicesMontclair, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nicolaas Martin Grobler among 1,443 pulmonary disease physician records in California
Nicolaas Martin Grobler, 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 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 fileYes · 74% of these records are
- Graduated2000 · median 2002 among the 1,061 with a school on file
- Record last updated2021 · 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.
All 1,443 in California → Every provider in Upland → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Terence Rhone, D.O.Upland, CA 917861932153582
- Frankie Utzurrum, M.D.Upland, CA 917861053505982
- Hung Che, M.D.West Covina, CA 917901619991262
- Azhar Haq, M.D.West Covina, CA 917901356365753
- Stanley Majcher, M.D., FACPWest Covina, CA 917901306974522
- Datar Sodhi, M.D.West Covina, CA 917901811928542
- Franklin Ho, M.D.West Covina, CA 917921538198205
- Nadir Eltahir, MDPomona, CA 917671053389338
Common questions
What is Nicolaas Martin Grobler, MD's NPI number?
Nicolaas Martin Grobler, MD's National Provider Identifier (NPI) is 1720154255, issued on Nov 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nicolaas Martin Grobler, MD located?
The NPPES record lists a practice address at 350 S Euclid Ave Ste C, Upland, CA, 91786. Phone: (909) 591-6575. Providers update this record themselves, so call before visiting.
How can I verify Nicolaas Martin Grobler, MD's license?
NPPES lists California license number A89047, 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 Nicolaas Martin Grobler, MD prescribe under Medicare Part D?
In 2024, Nicolaas Martin Grobler, MD had 14,468 Medicare Part D claims for 1,047 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.