Douglas Ambler, MD
Internal Medicine Physician · Wheaton, IL
Douglas Ambler, MD is an internal medicine physician with a practice address in Wheaton, Illinois, and NPI 1154343689, issued on Jul 24, 2006. Check the license (Illinois 036097066, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Douglas Ambler
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036097066 IL
Self-reported in NPPES; status is on the state search - Practice location
- 7 Blanchard Cir Ste 206, Wheaton, IL 60189
- Phone
- (630) 653-0848
- Enumerated
- Jul 24, 2006
- Entity
- Type 1 · individual
Also registered at 7 Blanchard Cir Ste 206
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Zainab AlsamaraeAmbulatory Care Pharmacist1154023398
- Firdose Gill, DOInternal Medicine Physician1407081342
- Brittany Raymer, APRN, CNPStudent in an Organized Health Care Education/Training Program1275345340
- Melissa Schumacher, MDInternal Medicine Physician1790230787
Verify Douglas Ambler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036097066Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
3.4 times the Medicare Part D claims of the average internal medicine physician in 2024
9,415 Medicare Part D claims for 732 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 148 claims were for opioids.
Most prescribed
- Levothyroxine Sodium543 claims
- Atorvastatin Calcium501 claims
- Amlodipine Besylate409 claims
- Rosuvastatin Calcium292 claims
- Simvastatin217 claims
- Memantine Hcl203 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 Medicare quality score for 2023: 94.1 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).
2 hospital and facility affiliations
- Central Dupage Physician GroupWheaton, IL
- Select Rehabilitation, LLCGlenview, IL
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Internal Medicine Physician providers in Illinois
There are 8,522 internal medicine physician records in Illinois.
Other internal medicine physician records in Illinois
- Peter Abadeer, D.O.Bloomington, IL1760469522
- Pamela Abadi, D.O.Winfield, IL1588820179
- Motaz Abas, MDPeoria, IL1215510201
- Elias Abate, M.D.Chicago, IL1336712199
- Maliha Abbas, D.O.Chicago, IL1174963920
- Zareena Abbas, MDChicago, IL1427078872
- Abu Abbasi, MDChicago, IL1083243877
- Ayesha Abbasi, MDChicago, IL1376216705
- Khalda Abbasi, MDNaperville, IL1487705240
- Misha Abbasi, MDChicago, IL1770111635
Common questions
What is Douglas Ambler, MD's NPI number?
Douglas Ambler, MD's National Provider Identifier (NPI) is 1154343689, issued on Jul 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Douglas Ambler, MD located?
The NPPES record lists a practice address at 7 Blanchard Cir Ste 206, Wheaton, IL, 60189. Phone: (630) 653-0848. Providers update this record themselves, so call before visiting.
How can I verify Douglas Ambler, MD's license?
NPPES lists Illinois license number 036097066, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Douglas Ambler, MD prescribe under Medicare Part D?
In 2024, Douglas Ambler, MD had 9,415 Medicare Part D claims for 732 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
What is Douglas Ambler, MD's Medicare quality score?
The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.