Gissel Sonnenbrot, FNP-BC
Family Nurse Practitioner · Olney, MD
Gissel Sonnenbrot, FNP-BC is a family nurse practitioner with a practice address in Olney, Maryland, and NPI 1710429618, issued on Nov 8, 2016. Check the license (Maryland R235796, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gissel Sonnenbrot
- Credential
- FNP-BC
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- R235796 MD
Self-reported in NPPES; status is on the state search - Practice location
- 18101 Prince Philip Dr Ste 5100, Olney, MD 20832
- Phone
- (913) 636-8666
- Enumerated
- Nov 8, 2016
- Record last updated
- Jan 17, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190129000757); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 4,124 in Maryland → Look up another NPI →
Also registered at 18101 Prince Philip Dr Ste 5100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jessica Choi, WHNP-BCWomen's Health Nurse Practitioner1356054845
Verify Gissel Sonnenbrot in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license R235796Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average family nurse practitioner in 2024
95 Medicare Part D claims for 33 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Estradiol24 claims
- Osphena12 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 practice group's MIPS final score for 2023 (Medicare payment program): 80.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $102.91
1 payment: food and beverage; the largest payer was Astellas Pharma US Inc. The 99,489 providers of this specialty with any payment received $650.95 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 2 group practices
- Medstar Medical Group II LLCWashington, DC
- Suburban/nrh Medical Rehabilitation IncBethesda, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gissel Sonnenbrot among 4,124 family nurse practitioner records in Maryland
Gissel Sonnenbrot, FNP-BC is one of 4,124 family nurse practitioner records with a practice address in Maryland. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 33% of them.
- NPI issued2016 · 33% of these records are older, 61% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2016 · median 2019 among the 2,370 with a school on file
- Record last updated2019 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
31 family nurse practitioner records list a practice address in Olney
They are 31 of the 742 NPPES records with a practice address in Olney, and 4,124 family nurse practitioner records in Maryland.
All 4,124 in Maryland → Every provider in Olney → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Bernadette Chestnutt, CRFNPOlney, MD 208321235147067
- Kelly Davis, CRNPOlney, MD 208321659820074
- Sherry Dulling, CRNPOlney, MD 208321043691884
- Shoshana Feldman, FNP-COlney, MD 208321932557139
- Tewabech Gedafie, CRNPOlney, MD 208321306276589
- Andrea Geraci, NPOlney, MD 208321093113821
- Shannon Murphy, CRNP, FNP-BCOlney, MD 208321982814786
- Shannon Nguy, CRNPOlney, MD 208321912422874
Common questions
What is Gissel Sonnenbrot, FNP-BC's NPI number?
Gissel Sonnenbrot, FNP-BC's National Provider Identifier (NPI) is 1710429618, issued on Nov 8, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Gissel Sonnenbrot, FNP-BC located?
The NPPES record lists a practice address at 18101 Prince Philip Dr Ste 5100, Olney, MD, 20832. Phone: (913) 636-8666. Providers update this record themselves, so call before visiting.
How can I verify Gissel Sonnenbrot, FNP-BC's license?
NPPES lists Maryland license number R235796, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Gissel Sonnenbrot, FNP-BC prescribe under Medicare Part D?
In 2024, Gissel Sonnenbrot, FNP-BC had 95 Medicare Part D claims for 33 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Gissel Sonnenbrot, FNP-BC's MIPS final score?
The 2023 MIPS final score is 80.2 of 100, reported for the practice group. 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.