Christine O. Diffenderffer, CRNP
Family Nurse Practitioner · Baltimore, MD
Christine O. Diffenderffer, CRNP is a family nurse practitioner with a practice address in Baltimore, Maryland, and NPI 1831754563, issued on May 8, 2019. Check the license (Maryland R210124, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Christine O. Diffenderffer
- Credential
- CRNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- R210124 MD
F04190682 MD
Self-reported in NPPES; status is on the state search - Practice location
- 601 N Caroline St, Baltimore, MD 21287
- Phone
- (410) 955-5000
- Enumerated
- May 8, 2019
- Record last updated
- Jan 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 4,124 in Maryland → Look up another NPI →
Also registered at 601 N Caroline St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Christine O. Diffenderffer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license R210124Check 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
151 Medicare Part D claims for 47 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Buprenorphine-Naloxone12 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.
Christine O. Diffenderffer among 4,124 family nurse practitioner records in Maryland
Christine O. Diffenderffer, 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 2019, is newer than 50% of them.
- NPI issued2019 · 50% of these records are older, 42% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2021 · 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
- Lauren BoyerBaltimore, MD 212871285043422
- Nancyellen Brennan, C.R.N.P.Baltimore, MD 212871164473278
- Erika Dare, CRNPBaltimore, MD 212871427399765
- Carlene Edwards, FNPBaltimore, MD 212871104063262
- Caroline ElangweBaltimore, MD 212871134498033
- Heather GausepohlBaltimore, MD 212871639509144
- Kathleen GriffithBaltimore, MD 212871154509545
- Brenda Johnson, NURSE PRACTITIONERBaltimore, MD 212871144555772
Common questions
What is Christine O. Diffenderffer, CRNP's NPI number?
Christine O. Diffenderffer, CRNP's National Provider Identifier (NPI) is 1831754563, issued on May 8, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Christine O. Diffenderffer, CRNP located?
The NPPES record lists a practice address at 601 N Caroline St, Baltimore, MD, 21287. Phone: (410) 955-5000. Providers update this record themselves, so call before visiting.
How can I verify Christine O. Diffenderffer, CRNP's license?
NPPES lists Maryland license number R210124, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Christine O. Diffenderffer, CRNP prescribe under Medicare Part D?
In 2024, Christine O. Diffenderffer, CRNP had 151 Medicare Part D claims for 47 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.