Shannon Marissa Larmooh, FNP
Family Nurse Practitioner · Baltimore, MD
Shannon Marissa Larmooh, FNP is a family nurse practitioner with a practice address in Baltimore, Maryland, and NPI 1306312541, issued on Oct 15, 2018. Check the license (Maryland R159668, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Shannon Marissa Larmooh
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- R159668 MD
Self-reported in NPPES; status is on the state search - Practice location
- 6225 Smith Ave Ste B300, Baltimore, MD 21209
- Phone
- (667) 208-8855
- Enumerated
- Oct 15, 2018
- Record last updated
- Dec 23, 2025
- Medicare enrollment
- Enrolled (PECOS I20190108001828); 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 6225 Smith Ave Ste B300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Katherine De GuzmanFamily Nurse Practitioner1477893600
Verify Shannon Marissa Larmooh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license R159668Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average family nurse practitioner in 2024
370 Medicare Part D claims for 251 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Paxlovid37 claims
- Amoxicillin-Clavulanate Potass20 claims
- Nitrofurantoin Mono-Macro18 claims
- Albuterol Sulfate Hfa17 claims
- Methylprednisolone17 claims
- Azithromycin16 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): 86.8 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).
Bills Medicare through one group practice
- Johns Hopkins Community Physicians, IncBaltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Shannon Marissa Larmooh among 4,124 family nurse practitioner records in Maryland
Shannon Marissa Larmooh, FNP 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 2018, is newer than 43% of them.
- NPI issued2018 · 43% of these records are older, 50% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2018 · median 2019 among the 2,370 with a school on file
- Record last updated2025 · 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).
712 family nurse practitioner records list a practice address in Baltimore
They are 712 of the 35,183 NPPES records with a practice address in Baltimore, and 4,124 family nurse practitioner records in Maryland.
All 4,124 in Maryland → Every provider in Baltimore → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Batsheva Berkowitz, CRNPBaltimore, MD 212091629700554
- Katherine De GuzmanBaltimore, MD 212091477893600
- Kevin Donnelly, CRNP-FNPBaltimore, MD 212091740950054
- Frances Eppig, CRNPBaltimore, MD 212091659437564
- Natalie Fortin, CRNP, FNP-BCBaltimore, MD 212091174205546
- Sarah Freburger, NPBaltimore, MD 212091922619246
- Renee Hochman, NPBaltimore, MD 212091245901792
- Sarah HofstetterBaltimore, MD 212091215752035
Common questions
What is Shannon Marissa Larmooh, FNP's NPI number?
Shannon Marissa Larmooh, FNP's National Provider Identifier (NPI) is 1306312541, issued on Oct 15, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Shannon Marissa Larmooh, FNP located?
The NPPES record lists a practice address at 6225 Smith Ave Ste B300, Baltimore, MD, 21209. Phone: (667) 208-8855. Providers update this record themselves, so call before visiting.
How can I verify Shannon Marissa Larmooh, FNP's license?
NPPES lists Maryland license number R159668, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Shannon Marissa Larmooh, FNP prescribe under Medicare Part D?
In 2024, Shannon Marissa Larmooh, FNP had 370 Medicare Part D claims for 251 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Shannon Marissa Larmooh, FNP's MIPS final score?
The 2023 MIPS final score is 86.8 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.