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SHANNON MARISSA LARMOOH FNP
NPI 1306312541
Nurse Practitioner - Family in Baltimore, MD

Active since October 15, 2018PECOS EnrolledAccepts Medicare Assignment
86.79/100
CMS Quality Rating
6225 SMITH AVE STE B300, BALTIMORE, MD 21209(667) 208-8855 Get Directions Write a Review

NPPES record last updated: December 23, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 23, 2025, Nov 2, 2018, Oct 15, 2018 (3 updates tracked since 2018).

About Shannon Marissa Larmooh Fnp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SHANNON MARISSA LARMOOH FNP (NPI 1306312541) is an individual family provider in Baltimore, Maryland, licensed in Maryland (R159668) and active in the NPI registry since October 2018. She is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Hospital, The, and is a graduate of Other (2018).

NPPES Registry Identity

NPI1306312541
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameSHANNON MARISSA LARMOOHCredential: FNP
Location Address6225 SMITH AVE STE B300Baltimore, MD 21209-3613
Mailing Address6225 Smith Ave Ste B300Baltimore, MD 21209-3613 · (667) 208-8855
Phone(667) 208-8855
Sole ProprietorNo
Medical School CMSOtherGraduated 2018
Enumeration DateOctober 15, 2018
Last NPPES UpdateDecember 23, 20253 updates tracked since enumeration
NPPES CertifiedDecember 23, 2025
✔ NPI 1306312541 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in MD · R159668
6225 SMITH AVE STE B300, Baltimore, MD 21209
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Shannon Marissa Larmooh Fnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2961748272
PECOS Enrollment IDI20190108001828
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
189 services180 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
68 services67 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
67 services67 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
16 services16 patients
Telephone medical discussion with physician, 21-30 minutes 99443
This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.
16 services16 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Johns Hopkins Hospital, The

Acute Care Hospitals · Baltimore, MD
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210009
Location600 North Wolfe StreetBaltimore, MD 21287 · Baltimore City County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21209 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$94.08 typical visit price
range $60.73 – $183.44
Typical copayment $23.52 (range $15.18 – $45.86)
Most-billed visit code 99203
Established Patient
$106.59 typical visit price
range $19.60 – $149.17
Typical copayment $26.64 (range $4.90 – $37.29)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

86.79/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality86.46
Promoting Interoperability97
Improvement Activities40
Cost72

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KATHERINE S DE GUZMAN
Nurse Practitioner (Family)
6225 SMITH AVE STE B300
BALTIMORE, MD 21209
Baltimore County (410) 583-2653

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Shannon Larmooh's NPI number?

The NPI number for Shannon Larmooh is 1306312541. It was assigned to this individual provider in the NPPES registry on October 15, 2018.

Where is Shannon Larmooh located?

Shannon Larmooh practices at 6225 Smith Ave Ste B300, Baltimore, MD 21209. The listed phone number is (667) 208-8855.

What is Shannon Larmooh's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Shannon Larmooh enrolled in Medicare?

Yes. Shannon Larmooh is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Shannon Larmooh affiliated with any hospitals?

According to CMS data, Shannon Larmooh is affiliated with Johns Hopkins Hospital, The.

When was this NPI record last updated?

The NPPES record for Shannon Larmooh was last updated on December 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.