Catherine Tierney, CRNP
Family Nurse Practitioner · Gaithersburg, MD
Catherine Tierney, CRNP is a family nurse practitioner with a practice address in Gaithersburg, Maryland, and NPI 1699127936, issued on Jul 11, 2016. Check the license (Maryland R213930, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Catherine Tierney
- Credential
- CRNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- R213930 MD
RN1023485 DC
0024184998 VA
Self-reported in NPPES; status is on the state search - Practice location
- 12111 Darnestown RD, Gaithersburg, MD 20878
- Phone
- (301) 926-3020
- Enumerated
- Jul 11, 2016
- Record last updated
- Sep 16, 2022
- Fax
- (215) 829-5855
- Medicare enrollment
- Enrolled (PECOS I20161128002472); 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 12111 Darnestown RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Daniel Gold, M.D.Family Medicine Physician1952669236
- Robert Levine, D.O.Family Medicine Physician1417274432
- Mary Suntum, CRNPFamily Nurse Practitioner1376929737
Verify Catherine Tierney in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license R213930Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average family nurse practitioner in 2024
161 Medicare Part D claims for 118 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Tamsulosin Hcl31 claims
- Gemtesa18 claims
- Amoxicillin-Clavulanate Potass13 claims
- Nitrofurantoin Mono-Macro13 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): 76.3 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: $27.93
1 payment: food and beverage; the largest payer was 180 Medical, 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
- Medstar Urgent Care LLCWashington, DC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Tierney among 4,124 family nurse practitioner records in Maryland
Catherine Tierney, CRNP 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 updated2022 · 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).
59 family nurse practitioner records list a practice address in Gaithersburg
They are 59 of the 2,580 NPPES records with a practice address in Gaithersburg, and 4,124 family nurse practitioner records in Maryland.
All 4,124 in Maryland → Every provider in Gaithersburg → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Annella Banks, CFNPGaithersburg, MD 208781356557359
- Susan Evans, A.P.R.N.N Potomac, MD 208781285710160
- Adele Hagen, NP-CGaithersburg, MD 208781386993640
- Danielle Johnson, CRNP- FAMILYGaithersburg, MD 208781831478890
- Martine Kirwin, NPGaithersburg, MD 208781649776121
- Lori Lucas, NPGaithersburg, MD 208781831508878
- Ginette Ndingue, NPGaithersburg, MD 208781770015794
- Nupur Rivera, MSN, FNP-CGaithersburg, MD 208781669847513
Common questions
What is Catherine Tierney, CRNP's NPI number?
Catherine Tierney, CRNP's National Provider Identifier (NPI) is 1699127936, issued on Jul 11, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Tierney, CRNP located?
The NPPES record lists a practice address at 12111 Darnestown RD, Gaithersburg, MD, 20878. Phone: (301) 926-3020. Providers update this record themselves, so call before visiting.
How can I verify Catherine Tierney, CRNP's license?
NPPES lists Maryland license number R213930, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Catherine Tierney, CRNP prescribe under Medicare Part D?
In 2024, Catherine Tierney, CRNP had 161 Medicare Part D claims for 118 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Catherine Tierney, CRNP's MIPS final score?
The 2023 MIPS final score is 76.3 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.