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ERIN E KOSER CNM
NPI 1629506597
Advanced Practice Midwife in York, PA

Active since May 23, 2017PECOS EnrolledAccepts Medicare Assignment
1232 GREENSPRINGS DR, YORK, PA 17402(717) 845-9639(717) 715-1310 Get Directions Write a Review

NPPES record last updated: June 5, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jun 5, 2024, Jan 3, 2022, Oct 14, 2019 and 1 more (4 updates tracked since 2017).

About Erin E Koser Cnm NPPES

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

ERIN E KOSER CNM (NPI 1629506597) is an individual advanced practice midwife in York, Pennsylvania, licensed in Pennsylvania (MW010449) and active in the NPI registry since May 2017. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2016).

NPPES Registry Identity

NPI1629506597
Entity TypeIndividualFemale
Primary Taxonomy367A00000X
Provider Legal NameERIN E KOSERCredential: CNM
Location Address1232 GREENSPRINGS DRYork, PA 17402-8825
Mailing Address1232 Greensprings DrYork, PA 17402-8825 · (717) 845-9639 · Fax (717) 715-1310
Phone(717) 845-9639
Fax(717) 715-1310
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateMay 23, 2017
Last NPPES UpdateJune 5, 20244 updates tracked since enumeration
NPPES CertifiedJune 5, 2024
✔ NPI 1629506597 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAdvanced Practice MidwifePhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code367A00000X
License✔ Licensed in PA · MW010449
Definition
Advanced practice midwifery encompasses the independent provision of care during pregnancy, childbirth, and the postpartum period; sexual and reproductive health; gynecologic health; and family planning services, including preconception care. Midwives also provide primary care for individuals from adolescence throughout the lifespan as well as care for the healthy newborn during the first 28 days of life. Midwives provide initial and ongoing comprehensive assessment, diagnosis, and treatment. Midwifery care includes health promotion, disease prevention, risk assessment and management, and individualized wellness education and counseling. Source: American College of Nurse-Midwives, www.midwife.org Additional Resources: See the American College of Nurse-Midwives, www.midwife.org, for more information on Certified Nurse-Midwives, Certified Midwives, the American Midwifery Certification Board (AMCB), and licensure.
1232 GREENSPRINGS DR, York, PA 17402
Open in Google Maps ↗

Secondary Practice Locations 2

Location 113515 Wolfe Rd Ste DNew Freedom, PA 17349-9346 · Phone (717) 812-2540 · Fax (717) 715-1310
Location 21600 6th Ave Ste 114York, PA 17403-2627 · Phone (717) 845-9639

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

Erin E Koser Cnm 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 ID4183984990
PECOS Enrollment IDI20180215001066
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

3

Medicare enrollment records show Erin Koser reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Pinnacle Health Medical Services
Same address
Obstetrics & Gynecology
1232 GREENSPRINGS DR
York, PA 17402
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 1,902 clinicians in this Medicare group
NPI 1184124430 (717) 845-9639
Pinnacle Health Regional Physicians
0.5 mi
Family Medicine
1232 GREENSPRINGS DR
York, PA 17402
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 468 clinicians in this Medicare group
NPI 1457880833 (717) 755-6166
Dlp Conemaugh Physician Practices LLC
94 mi
Emergency Medicine
105 NASON DR
Roaring Spring, PA 16673
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 771 clinicians in this Medicare group
NPI 1245742188 (814) 224-6251

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 17402 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
$84.88 typical visit price
range $54.64 – $166.87
Typical copayment $21.22 (range $13.66 – $41.71)
Most-billed visit code 99203
Established Patient
$68.36 typical visit price
range $17.33 – $135.84
Typical copayment $17.09 (range $4.33 – $33.96)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 10

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

PINNACLE HEALTH MEDICAL SERVICES
Obstetrics & Gynecology
1232 GREENSPRINGS DR
YORK, PA 17402
York County (717) 845-9639
MEMORIAL ENTERPRISES INC
Family Medicine
1232 GREENSPRINGS DR
YORK, PA 17402
York County (717) 755-6166
PINNACLE HEALTH REGIONAL PHYSICIANS
Family Medicine
1232 GREENSPRINGS DR
YORK, PA 17402
York County (717) 755-6166
ABIGAIL BARLEY
Obstetrics & Gynecology
1232 GREENSPRINGS DR
YORK, PA 17402
York County (717) 849-5592
YORK CLINIC COMPANY LLC
Family Medicine
1232 GREENSPRINGS DR
YORK, PA 17402
York County (717) 755-6166
MEMORIAL ENTERPRISES INC. D/B/A MEMORIAL PRIMARY CARE
Family Medicine
1232 GREENSPRINGS DR
YORK, PA 17402
York County (717) 755-6166
MEMORIAL ENTERPRISES INC
Family Medicine
1232 GREENSPRINGS DR
YORK, PA 17402
York County (717) 755-6166
KODJO KARIKARI MD
Obstetrics & Gynecology
1232 GREENSPRINGS DR
YORK, PA 17402
York County (717) 845-9639

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 Erin Koser's NPI number?

The NPI number for Erin Koser is 1629506597. It was assigned to this individual provider in the NPPES registry on May 23, 2017.

Where is Erin Koser located?

Erin Koser practices at 1232 Greensprings Dr, York, PA 17402. The listed phone number is (717) 845-9639.

What is Erin Koser's specialty?

The primary specialty registered for this NPI is Advanced Practice Midwife with taxonomy code 367A00000X.

Is Erin Koser enrolled in Medicare?

Yes. Erin Koser 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 Erin Koser's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Erin Koser reassigns Medicare benefits to 3 organizations: Pinnacle Health Medical Services (York, PA), Pinnacle Health Regional Physicians (York, PA) and Dlp Conemaugh Physician Practices LLC (Roaring Spring, PA). 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 Erin Koser's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Erin Koser was last updated on June 5, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.