1. Home
  2. Directory
  3. Texas
  4. Baytown
  5. Nurse Practitioner
  6. NPI Profile

MRS. KAREN ELIZABETH SHADOW FNP
NPI 1609380856
Nurse Practitioner - Family in Baytown, TX

Active since November 27, 2017PECOS EnrolledAccepts Medicare Assignment
4301 GARTH RD STE 101, BAYTOWN, TX 77521(832) 556-6625(832) 556-6650 Get Directions Write a Review

NPPES record last updated: September 6, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 6, 2024, Dec 20, 2021, Jun 16, 2018 and 1 more (4 updates tracked since 2017).

About Mrs. Karen Elizabeth Shadow Fnp NPPES

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

MRS. KAREN ELIZABETH SHADOW FNP (NPI 1609380856) is an individual family provider in Baytown, Texas, licensed in Texas (AP134316) and active in the NPI registry since November 2017. She is enrolled in Medicare PECOS, is affiliated with Houston Methodist Baytown Hospital, and is a graduate of Other (2017).

NPPES Registry Identity

NPI1609380856
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMRS. KAREN ELIZABETH SHADOWCredential: FNP
Location Address4301 GARTH RD STE 101Baytown, TX 77521-3157
Mailing Address4301 Garth Rd Ste 101Baytown, TX 77521-3157 · (832) 556-6625 · Fax (832) 566-6650
Phone(832) 556-6625
Fax(832) 556-6650
Sole ProprietorYes
Medical School CMSOtherGraduated 2017
Enumeration DateNovember 27, 2017
Last NPPES UpdateSeptember 6, 20244 updates tracked since enumeration
NPPES CertifiedSeptember 6, 2024
✔ NPI 1609380856 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in TX · AP134316
4301 GARTH RD STE 101, Baytown, TX 77521
Open in Google Maps ↗

Other Names 1

Former Name (1)Karen Elizabeth Riojas Fnp

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, WellPoint.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

Mrs. Karen Elizabeth Shadow Fnp 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 ID9032450028
PECOS Enrollment IDI20190329002126
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 Karen Shadow reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Tmh Physician Associates PLLC
26 mi
Ophthalmology
6550 FANNIN ST, SUITE 447
Houston, TX 77030
  • Reassigned Medicare billing, Texas enrollment
  • 2,407 clinicians in this Medicare group
NPI 1275779225 (713) 441-7389
Houston Methodist Specialty Physicians
26 mi
Otolaryngology
7550 GREENBRIAR DR STE 600
Houston, TX 77030
  • Reassigned Medicare billing, Texas enrollment
  • 1,579 clinicians in this Medicare group
NPI 1902614332 (281) 414-6055

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 5

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.

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
99 services93 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
92 services85 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
62 services48 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
57 services57 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
19 services19 patients

Hospital Affiliations CMS Care Compare

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

Houston Methodist Baytown Hospital

Acute Care Hospitals · Baytown, TX
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450424
Location4401 Garth RoadBaytown, TX 77521 · Harris County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77521 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
$90.40 typical visit price
range $58.24 – $176.98
Typical copayment $22.60 (range $14.56 – $44.24)
Most-billed visit code 99203
Established Patient
$102.71 typical visit price
range $18.60 – $143.93
Typical copayment $25.67 (range $4.65 – $35.98)
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.

Other Providers at the Same Location NPPES 2

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

HADIDI HEART & VASCULAR MD PA
Clinic/Center (Health Service)
4301 GARTH RD STE 101
BAYTOWN, TX 77521
Harris County (281) 422-3364
TANIQUA MIGHTY FNP
Nurse Practitioner (Family)
4301 GARTH RD STE 101
BAYTOWN, TX 77521
Harris County (832) 556-6625

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 Karen Shadow's NPI number?

The NPI number for Karen Shadow is 1609380856. It was assigned to this individual provider in the NPPES registry on November 27, 2017. The provider is also known as Karen Elizabeth Riojas Fnp.

Where is Karen Shadow located?

Karen Shadow practices at 4301 Garth Rd Ste 101, Baytown, TX 77521. The listed phone number is (832) 556-6625.

What is Karen Shadow's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Karen Shadow enrolled in Medicare?

Yes. Karen Shadow 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 Karen Shadow's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karen Shadow reassigns Medicare benefits to 2 organizations: Tmh Physician Associates PLLC (Houston, TX) and Houston Methodist Specialty Physicians (Houston, TX). 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 Karen Shadow's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Karen Shadow accept?

Health plans from Blue Cross and Blue Shield of Texas and WellPoint list Karen Shadow 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 Karen Shadow affiliated with any hospitals?

According to CMS data, Karen Shadow is affiliated with Houston Methodist Baytown Hospital.

When was this NPI record last updated?

The NPPES record for Karen Shadow was last updated on September 6, 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.