Christen Marie Elfrink, MSN, ANP-BC
Nurse Practitioner · Saint Louis, MO
Christen Marie Elfrink, MSN, ANP-BC is a nurse practitioner with a practice address in Saint Louis, Missouri, and NPI 1700163458, issued on Nov 9, 2011. Check the license (Missouri 2011036531, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Christen Marie Elfrink
- Credential
- MSN, ANP-BC
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 2011036531 MO
Self-reported in NPPES; status is on the state search - Practice location
- 4921 Parkview PL, Saint Louis, MO 63110
- Phone
- (314) 747-1171
- Enumerated
- Nov 9, 2011
- Record last updated
- Dec 2, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (314) 362-3192
- Medicare enrollment
- Enrolled (PECOS I20120202000881); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 4921 Parkview PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Syed Adil, MDAdult Reconstructive Orthopaedic Surgery Physician1467942953
- Homaa Ahmad, MDCardiovascular Disease Physician1477635092
Verify Christen Marie Elfrink in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 2011036531Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% more Medicare Part D claims than the average nurse practitioner in 2024
1,502 Medicare Part D claims for 155 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Levothyroxine Sodium102 claims
- Lisinopril75 claims
- Mirtazapine73 claims
- Sertraline Hcl72 claims
- Potassium Chloride56 claims
- Furosemide54 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.
Bills Medicare through one group practice
- Mercy Clinic East CommunitiesSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
437 nurse practitioner records list a practice address in Saint Louis
They are 437 of the 27,605 NPPES records with a practice address in Saint Louis, and 1,720 nurse practitioner records in Missouri.
All 437 in Saint Louis → All 1,720 in Missouri → Every provider in Saint Louis →
Other nurse practitioner records in Missouri
- Caitlin Aaron, NP-CLees Summit, MO1649934340
- Sarah Abaricia, FNPSaint Peters, MO1447709365
- Maureen Abongo, DNPSaint Louis, MO1225819048
- Hawo AbukarBlue Springs, MO1841135084
- Morgan Ackerman, NPChesterfield, MO1811625676
- Yolanda Acklin, NPFlorissant, MO1881790996
- Alina Adams, NPRichmond Heights, MO1003393513
- Dorothy Adams, NPHolden, MO1043274210
- Holly Adams, MSN, FNP-BCDoniphan, MO1841899614
- Lindsey Adams, NP-CFenton, MO1326611757
Common questions
What is Christen Marie Elfrink, MSN, ANP-BC's NPI number?
Christen Marie Elfrink, MSN, ANP-BC's National Provider Identifier (NPI) is 1700163458, issued on Nov 9, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Christen Marie Elfrink, MSN, ANP-BC located?
The NPPES record lists a practice address at 4921 Parkview PL, Saint Louis, MO, 63110. Phone: (314) 747-1171. Providers update this record themselves, so call before visiting.
How can I verify Christen Marie Elfrink, MSN, ANP-BC's license?
NPPES lists Missouri license number 2011036531, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does Christen Marie Elfrink, MSN, ANP-BC prescribe under Medicare Part D?
In 2024, Christen Marie Elfrink, MSN, ANP-BC had 1,502 Medicare Part D claims for 155 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.