Carolyn Elizabeth Johnstone, M.D.
Emergency Medicine Physician · New Port Richey, FL
Carolyn Elizabeth Johnstone, M.D. is an emergency medicine physician with a practice address in New Port Richey, Florida, and NPI 1750601035, issued on Jun 9, 2010. Check the license (Florida ME 116380, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- Carolyn Elizabeth Johnstone
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- ME 116380 FL
Self-reported in NPPES; status is on the state search - Practice location
- 9330 State Road 54, New Port Richey, FL 34655
- Phone
- (727) 834-4000
- Enumerated
- Jun 9, 2010
- Record last updated
- Aug 30, 2013 (not updated in 13 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 4,034 in Florida → Look up another NPI →
Also registered at 9330 State Road 54
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Foster, M.D.Emergency Medicine Physician1679736029
Verify Carolyn Elizabeth Johnstone in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license ME 116380Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average emergency medicine physician in 2024
87 Medicare Part D claims for 68 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 20 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen14 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.
Carolyn Elizabeth Johnstone among 4,034 emergency medicine physician records in Florida
Carolyn Elizabeth Johnstone, M.D. is one of 4,034 emergency medicine physician records with a practice address in Florida. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 52% of them.
- NPI issued2010 · 52% of these records are older, 46% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 55% of these records are
- Record last updated2013 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Florida
There are 4,034 emergency medicine physician records in Florida.
All 4,034 in Florida → Every provider in New Port Richey → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Fernando Batista Morales, M.D.Trinity, FL 346551679909550
- Peter Duic, MDNew Port Richey, FL 346551508872128
- James Foster, M.D.New Port Richey, FL 346551679736029
- Mark Ghobrial, DOTrinity, FL 346551518634005
- Daniel Howerton, D.OTrinity, FL 346551942650031
- Alexander Maqueira, DOTrinity, FL 346551386218527
- Molly McIntyre, MDTrinity, FL 346551124346085
- John Opyoke, MDNew Port Richey, FL 346551720035181
Common questions
What is Carolyn Elizabeth Johnstone, M.D.'s NPI number?
Carolyn Elizabeth Johnstone, M.D.'s National Provider Identifier (NPI) is 1750601035, issued on Jun 9, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Carolyn Elizabeth Johnstone, M.D. located?
The NPPES record lists a practice address at 9330 State Road 54, New Port Richey, FL, 34655. Phone: (727) 834-4000. Providers update this record themselves, so call before visiting.
How can I verify Carolyn Elizabeth Johnstone, M.D.'s license?
NPPES lists Florida license number ME 116380, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Carolyn Elizabeth Johnstone, M.D. prescribe under Medicare Part D?
In 2024, Carolyn Elizabeth Johnstone, M.D. had 87 Medicare Part D claims for 68 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.