Registry data as of Aug 27, 2026

Elizabeth Johnston, CRNP, CNM

Obstetrics & Gynecology Nurse Practitioner · Baltimore, MD

Elizabeth Johnston, CRNP, CNM is an obstetrics & gynecology nurse practitioner with a practice address in Baltimore, Maryland, and NPI 1629427109, issued on Jun 6, 2016. Check the license with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1629427109
Name
Elizabeth Johnston
Credential
CRNP, CNM
Primary taxonomy
Obstetrics & Gynecology Nurse Practitioner 363LX0001X
Practice location
3333 N Calvert St Ste 650, Baltimore, MD 21218
Phone
(410) 554-7333
Enumerated
Jun 6, 2016
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 3333 N Calvert St Ste 650

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Lauren CosgriffObstetrics & Gynecology Physician1538628326

Verify Elizabeth Johnston in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Maryland board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
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PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

14% more Medicare Part D claims than the average obstetrics & gynecology nurse practitioner in 2024

275 Medicare Part D claims for 124 beneficiaries, against an average of 241 among the 1,098 providers of this specialty who prescribed in Part D.

  1. Elizabeth Johnston275
  2. Specialty average241

Most prescribed

  1. Estradiol89 claims
  2. Terconazole25 claims
  3. Clotrimazole-Betamethasone21 claims
  4. Fluconazole15 claims
  5. Metronidazole13 claims
  6. Valacyclovir13 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 Medicare quality score for 2023: 100 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.

  1. Qualityout of 100 · 30% of the final score
  2. Costout of 100 · 30%
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $35.11

1 payment, mostly food and beverage; the largest payer was Abiomed. The 1,037 providers of this specialty with any payment received $485.44 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Elizabeth Johnston$35.11
  2. Specialty average$485.44

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital or facility affiliation

  1. Medstar Medical Group II LLCBaltimore, MD

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Obstetrics & Gynecology Nurse Practitioner providers in Maryland

There are 77 obstetrics & gynecology nurse practitioner records in Maryland.

Other obstetrics & gynecology nurse practitioner records in Maryland

  1. Selamawit AbegazFrederick, MD1619794047
  2. Patsy Ardinger, CRNPBaltimore, MD1366549453
  3. Shannon Artis, CRNPBaltimore, MD1861120008
  4. Lorraine Baker-Francis, CRNPSilver Spring, MD1346334620
  5. Sondra Barker, C.R.N.P.Baltimore, MD1437253127
  6. Raena Barnes, M.S., W.H.N.P.Columbia, MD1861709081
  7. Lisa Bayles, CRNPBerlin, MD1093704553
  8. Sylvia Bennett, CRNPFrederick, MD1740279413
  9. Tammie Blair, NPColumbia, MD1902849938
  10. Debbie Boyd, CRNPHavre De Grace, MD1700873452

Common questions

What is Elizabeth Johnston, CRNP, CNM's NPI number?

Elizabeth Johnston, CRNP, CNM's National Provider Identifier (NPI) is 1629427109, issued on Jun 6, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Elizabeth Johnston, CRNP, CNM located?

The NPPES record lists a practice address at 3333 N Calvert St Ste 650, Baltimore, MD, 21218. Phone: (410) 554-7333. Providers update this record themselves, so call before visiting.

How can I verify Elizabeth Johnston, CRNP, CNM's license?

Search the Maryland board that licenses this profession; the NPPES record confirms identity only.

How much does Elizabeth Johnston, CRNP, CNM prescribe under Medicare Part D?

In 2024, Elizabeth Johnston, CRNP, CNM had 275 Medicare Part D claims for 124 beneficiaries; the average among obstetrics & gynecology nurse practitioner prescribers was 241. Part D covers Medicare prescriptions only.

What is Elizabeth Johnston, CRNP, CNM's Medicare quality score?

The 2023 MIPS final score is 100 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), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.