Isabel C. Guerrero, MD
Infectious Disease Physician · Toms River, NJ
Isabel C. Guerrero, MD is an infectious disease physician with a practice address in Toms River, New Jersey, and NPI 1568456580, issued on Sep 6, 2005. Check the license (New Jersey MA39476, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Isabel C. Guerrero
- Credential
- MD
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- MA39476 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 25 Mule RD, Toms River, NJ 08755
- Phone
- (732) 286-2565
- Enumerated
- Sep 6, 2005
- Record last updated
- Mar 7, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (732) 286-7669
- Medicaid ID
- 3192407 NJ
- Medicare enrollment
- Enrolled (PECOS I20101015000738); may accept Medicare assignment
- Medical or professional school
- Rowan University School Of Osteopathic Medicine, 1972
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 375 in New Jersey → Look up another NPI →
Also registered at 25 Mule RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ashok Sinha, MDInternal Medicine Physician1477501062
Verify Isabel C. Guerrero in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license MA39476Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average infectious disease physician in 2024
290 Medicare Part D claims for 36 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 82% of claims.
Most prescribed
- Biktarvy98 claims
- Genvoya42 claims
- Isentress22 claims
- Dovato19 claims
- Vancomycin Hcl15 claims
- Descovy11 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: $377.54
14 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US Inc. The 3,895 providers of this specialty with any payment received $4,362.19 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
- Ocean County Board OF HealthToms River, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Isabel C. Guerrero among 375 infectious disease physician records in New Jersey
Isabel C. Guerrero, MD is one of 375 infectious disease physician records with a practice address in New Jersey. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated1972 · median 2000 among the 285 with a school on file
- Record last updated2008 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in New Jersey
There are 375 infectious disease physician records in New Jersey.
All 375 in New Jersey → Every provider in Toms River → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Margaret Chung, M.D.Toms River, NJ 087551578526489
- Travis Hendricks, D.O.Toms River, NJ 087551487911012
- Olivia Ortiz, M.D.Toms River, NJ 087551225191992
- Evelyn Tiu, M.D.Toms River, NJ 087551750335253
- David Kleinfeld, M.D.Brielle, NJ 087301881605491
- Bassam Hasan, MDBrick, NJ 087241346246097
- Geza Ruszka, MEDICAL DOCTORBrick, NJ 087241831271063
- Jacob Scutaru, MDLakewood, NJ 087011497195515
Common questions
What is Isabel C. Guerrero, MD's NPI number?
Isabel C. Guerrero, MD's National Provider Identifier (NPI) is 1568456580, issued on Sep 6, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Isabel C. Guerrero, MD located?
The NPPES record lists a practice address at 25 Mule RD, Toms River, NJ, 08755. Phone: (732) 286-2565. Providers update this record themselves, so call before visiting.
How can I verify Isabel C. Guerrero, MD's license?
NPPES lists New Jersey license number MA39476, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Isabel C. Guerrero, MD prescribe under Medicare Part D?
In 2024, Isabel C. Guerrero, MD had 290 Medicare Part D claims for 36 beneficiaries; the average among infectious disease physician prescribers was 689. 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.