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MS. ANNA M AHRENS ANP
NPI 1457480915
Nurse Practitioner in Saint Louis, MO

Active since March 02, 2007PECOS EnrolledAccepts Medicare Assignment
79.29/100
CMS Quality Rating
3844 S LINDBERGH BLVD STE 220, SAINT LOUIS, MO 63127(314) 996-7272(314) 996-6785 Get Directions Write a Review

NPPES record last updated: April 22, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 22, 2026, Apr 25, 2024, Apr 10, 2024 and 4 more (7 updates tracked since 2015).

About Ms. Anna M Ahrens Anp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MS. ANNA M AHRENS ANP (NPI 1457480915) is an individual nurse practitioner in Saint Louis, Missouri, licensed in Missouri (141504) and active in the NPI registry since March 2007. She is enrolled in Medicare PECOS, is affiliated with Missouri Baptist Medical Center, and is a graduate of Other (2004).

NPPES Registry Identity

NPI1457480915
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMS. ANNA M AHRENSCredential: ANP
Location Address3844 S LINDBERGH BLVD STE 220Saint Louis, MO 63127-1369
Mailing AddressPo Box 959354Saint Louis, MO 63195-9354 · (314) 996-7272 · Fax (314) 996-6785
Phone(314) 996-7272
Fax(314) 996-6785
Sole ProprietorNo
Medical School CMSOtherGraduated 2004
Enumeration DateMarch 2, 2007
Last NPPES UpdateApril 22, 20267 updates tracked since enumeration
NPPES CertifiedApril 22, 2026
✔ NPI 1457480915 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in MO · 141504
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Also ListedNurse Practitioner · Adult HealthTaxonomy 363LA2200X · License 141504 (MO)
3844 S LINDBERGH BLVD STE 220, Saint Louis, MO 63127
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Other Identifiers 1

Medicaid428347801MO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cox HealthPlans, UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ms. Anna M Ahrens Anp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2961469929
PECOS Enrollment IDI20041213000062
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Anna Ahrens reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Physician Groups Lc
7.4 mi
Multi-Specialty
670 MASON RIDGE CENTER DR STE 300
Saint Louis, MO 63141
  • Reassigned Medicare billing, Missouri enrollment
  • 611 clinicians in this Medicare group
NPI 1285664268 (314) 996-7644
Washington University
9.6 mi
Multi-Specialty
660 S EUCLID AVE
Saint Louis, MO 63110
  • Reassigned Medicare billing, Missouri enrollment
  • 1,133 clinicians in this Medicare group
NPI 1992746903 (314) 747-5192

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Missouri Baptist Medical Center

Acute Care Hospitals · Town And Country, MO
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260108
Location3015 N Ballas RdTown And Country, MO 63131 · St. Louis County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63127 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$86.32 typical visit price
range $55.65 – $169.38
Typical copayment $21.58 (range $13.91 – $42.34)
Most-billed visit code 99203
Established Patient
$98.37 typical visit price
range $17.76 – $137.92
Typical copayment $24.59 (range $4.44 – $34.48)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

79.29/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality71.46
Promoting Interoperability100
Improvement Activities40
Cost59.51

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MIDWEST ACUTE CARE CONSULTANTS, PC
Internal Medicine (Pulmonary Disease)
3844 S LINDBERGH BLVD STE 220
SAINT LOUIS, MO 63127
St. Louis County (314) 991-1118

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Anna Ahrens's NPI number?

The NPI number for Anna Ahrens is 1457480915. It was assigned to this individual provider in the NPPES registry on March 2, 2007.

Where is Anna Ahrens located?

Anna Ahrens practices at 3844 S Lindbergh Blvd Ste 220, Saint Louis, MO 63127. The listed phone number is (314) 996-7272.

What is Anna Ahrens's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Anna Ahrens enrolled in Medicare?

Yes. Anna Ahrens is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Anna Ahrens's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Anna Ahrens reassigns Medicare benefits to 2 organizations: Physician Groups Lc (Saint Louis, MO) and Washington University (Saint Louis, MO). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Anna Ahrens's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Anna Ahrens accept?

Health plans from Cox HealthPlans and UnitedHealthcare list Anna Ahrens as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Anna Ahrens affiliated with any hospitals?

According to CMS data, Anna Ahrens is affiliated with Missouri Baptist Medical Center.

When was this NPI record last updated?

The NPPES record for Anna Ahrens was last updated on April 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.