Phamela B. De Guzman, MD
Family Medicine Physician · Plainfield, IL
Phamela B. De Guzman, MD is a family medicine physician with a practice address in Plainfield, Illinois, and NPI 1568674844, issued on May 7, 2007. Check the license (Illinois 036111272, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Phamela B. De Guzman
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036111272 IL
Self-reported in NPPES; status is on the state search - Practice location
- 16519 S Route 59, Plainfield, IL 60586
- Phone
- (630) 646-5020
- Enumerated
- May 7, 2007
- Record last updated
- May 5, 2025
- Medicare enrollment
- Enrolled (PECOS I20041014000203); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 16519 S Route 59
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Caitlin Cheney, APN-CNPNurse Practitioner1376817668
- Danielle Everett, PA-CPhysician Assistant1225387194
- Gina Gedutis, APRN, FNP-CNurse Practitioner1700363827
- Shalini Kumar, MDFamily Medicine Physician1255909479
- Elizabeth Layfield, PA-CPhysician Assistant1821335530
- Arpit Patel, M.D.Family Medicine Physician1740711050
Verify Phamela B. De Guzman 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 036111272Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% fewer Medicare Part D claims than the average family medicine physician in 2024
2,493 Medicare Part D claims for 204 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 42 claims were for opioids.
Most prescribed
- Atorvastatin Calcium239 claims
- Losartan Potassium173 claims
- Amlodipine Besylate131 claims
- Levothyroxine Sodium130 claims
- Lisinopril105 claims
- Hydrochlorothiazide93 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 MIPS final score for 2023 (Medicare payment program): 91.4 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).
Bills Medicare through one group practice
- Endeavor Health Medical GroupEvanston, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Phamela B. De Guzman among 6,215 family medicine physician records in Illinois
Phamela B. De Guzman, MD is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 50% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1998 · median 2006 among the 3,714 with a school on file
- Record last updated2025 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
25 family medicine physician records list a practice address in Plainfield
They are 25 of the 1,198 NPPES records with a practice address in Plainfield, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Plainfield → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Aabha Beri, MDPlainfield, IL 605861508207507
- Ryan Fitzgerald, D.O.Plainfield, IL 605861346689411
- Mahwesh Javed, MDPlainfield, IL 605861710149224
- Vipuli Jayesinghe, M.D.Plainfield, IL 605861265673701
- Julie Jones, MDPlainfield, IL 605861598025298
- Sanjeeb Khatua, M.D.Plainfield, IL 605861770777658
- Shalini Kumar, MDPlainfield, IL 605861255909479
- Himadri Patel, D.O.Plainfield, IL 605861548250384
Common questions
What is Phamela B. De Guzman, MD's NPI number?
Phamela B. De Guzman, MD's National Provider Identifier (NPI) is 1568674844, issued on May 7, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Phamela B. De Guzman, MD located?
The NPPES record lists a practice address at 16519 S Route 59, Plainfield, IL, 60586. Phone: (630) 646-5020. Providers update this record themselves, so call before visiting.
How can I verify Phamela B. De Guzman, MD's license?
NPPES lists Illinois license number 036111272, 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 Phamela B. De Guzman, MD prescribe under Medicare Part D?
In 2024, Phamela B. De Guzman, MD had 2,493 Medicare Part D claims for 204 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Phamela B. De Guzman, MD's MIPS final score?
The 2023 MIPS final score is 91.4 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.