DR. LOIS ELAINE WAETJEN M.D.
NPI 1356324974
Obstetrics & Gynecology in Sacramento, CA

Q: What is Lois Waetjen's NPI number?

The NPI number for Lois Waetjen is 1356324974. It was assigned to this individual provider in the NPPES registry on November 29, 2005.

Q: What is Lois Waetjen's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Q: When was this NPI record last updated?

The NPPES record for Lois Waetjen was last updated on April 6, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.

Active since November 29, 2005PECOS EnrolledAccepts Medicare Assignment

4860 Y ST STE 2500, SACRAMENTO, CA 95817(916) 734-6900 Get Directions Write a Review

NPPES record last updated: April 6, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Dr. Lois Elaine Waetjen M.d. NPPES

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

DR. LOIS ELAINE WAETJEN M.D. (NPI 1356324974) is an individual obstetrics & gynecology provider in Sacramento, California, licensed in California (A68623) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS and is a graduate of Northwestern University Feinberg Medical School (1995).

NPPES Registry Identity

NPI1356324974

Entity TypeIndividualFemale

Primary Taxonomy207V00000X

Provider Legal NameDR. LOIS ELAINE WAETJENCredential: M.D.

Location Address4860 Y ST STE 2500Sacramento, CA 95817-2307

Mailing Address4860 Y St, Ob/gyn, Suite 2500, AccSacramento, CA 95817-2307 · (916) 734-6930 · Fax (916) 734-6666

Phone(916) 734-6900

Sole ProprietorNo

Medical School CMSNorthwestern University Feinberg Medical SchoolGraduated 1995

Enumeration DateNovember 29, 2005

Last NPPES UpdateApril 6, 2018

✔ NPI 1356324974 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

License✔ Licensed in CA · A68623

Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

4860 Y ST STE 2500, Sacramento, CA 95817

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Other Identifiers 1

Medicaid00A686230CA

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

Dr. Lois Elaine Waetjen M.d. 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 ID4284804600

PECOS Enrollment IDI20110823000188

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

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

Regents Of The University Of California

0.3 mi

Multi-Specialty

3160 FOLSOM BLVD STE 1400
Sacramento, CA 95816

Reassigned Medicare billing, California enrollment
918 clinicians in this Medicare group

NPI 1962482513 (916) 734-7777

Regents Of The University Of Ca

0.3 mi

Hematology & Oncology

1508 ALHAMBRA BLVD
Sacramento, CA 95816

Reassigned Medicare billing, California enrollment
Medicare enrollment name: Regents Of The Univ Of Ca
2,570 clinicians in this Medicare group

NPI 1528051679 (916) 734-5803

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

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

40 services35 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95817 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

$137.20 typical visit price

range $60.44 – $180.85

Typical copayment $34.30 (range $15.11 – $45.21)

Most-billed visit code 99204

Established Patient

$75.03 typical visit price

range $19.88 – $148.15

Typical copayment $18.75 (range $4.97 – $37.03)

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 20

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

DR. MARYAM ALI MD

Student in an Organized Health Care Education/Training Program