DR. KAREN EVELIN OLARTE MERIDA M.D.
NPI 1245460260
Internal Medicine in San Antonio, TX

Q: What is Karen Olarte Merida's NPI number?

The NPI number for Karen Olarte Merida is 1245460260. It was assigned to this individual provider in the NPPES registry on July 24, 2009. The provider is also known as Dr. Karen Evelin Olarte M.D..

Q: What is Karen Olarte Merida's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Active since July 24, 2009PECOS EnrolledAccepts Medicare Assignment

1313 GUADALUPE ST STE 100, SAN ANTONIO, TX 78207(210) 921-3800 Get Directions Write a Review

NPPES record last updated: July 19, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 19, 2021, Jan 2, 2019 (2 updates tracked since 2019).

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About Dr. Karen Evelin Olarte Merida M.d. NPPES

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

DR. KAREN EVELIN OLARTE MERIDA M.D. (NPI 1245460260) is an individual internal medicine provider in San Antonio, Texas, licensed in Texas (P5442) and active in the NPI registry since July 2009. She is enrolled in Medicare PECOS and is a graduate of Other (2006).

NPPES Registry Identity

NPI1245460260

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameDR. KAREN EVELIN OLARTE MERIDACredential: M.D.

Location Address1313 GUADALUPE ST STE 100San Antonio, TX 78207-5547

Mailing Address720 Pleasanton RdSan Antonio, TX 78214-1306 · (210) 921-3800

Phone(210) 921-3800

Sole ProprietorNo

Medical School CMSOtherGraduated 2006

Enumeration DateJuly 24, 2009

Last NPPES UpdateJuly 19, 20212 updates tracked since enumeration

NPPES CertifiedJuly 19, 2021

✔ NPI 1245460260 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in TX · P5442

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

1313 GUADALUPE ST STE 100, San Antonio, TX 78207

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Other Names 1

Former Name (1)Dr. Karen Evelin Olarte M.d.

Accepted Insurance

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

Dr. Karen Evelin Olarte Merida 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 ID840434486

PECOS Enrollment IDI20130920000210

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 Reassignment

Medicare enrollment records show Karen Olarte Merida reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Gmg Health Systems Associates PA

2.9 mi

Family Medicine

720 PLEASANTON RD
San Antonio, TX 78214

Reassigned Medicare billing, Texas enrollment
125 clinicians in this Medicare group

NPI 1023030160 (210) 921-3800

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 4

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 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.

70 services38 patients

Blood glucose (sugar) test performed by hand-held instrument 82962

A blood glucose test uses a handheld device to measure the amount of sugar in your blood. A small prick on your finger allows a drop of blood to be placed on a test strip, which is then read by the device. This helps monitor and manage diabetes effectively.

18 services13 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

16 services16 patients

Influenza vaccine split virus, preservative free 90662

The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.

12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78207 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

$126.40 typical visit price

range $54.84 – $166.88

Typical copayment $31.60 (range $13.71 – $41.72)

Most-billed visit code 99204

Established Patient

$97.05 typical visit price

range $17.52 – $136.11

Typical copayment $24.26 (range $4.38 – $34.02)

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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

3 suppliers12 claims24 services$6.51 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Olarte Merida's NPI number?

The NPI number for Karen Olarte Merida is 1245460260. It was assigned to this individual provider in the NPPES registry on July 24, 2009. The provider is also known as Dr. Karen Evelin Olarte M.D..

Where is Karen Olarte Merida located?

Karen Olarte Merida practices at 1313 Guadalupe St Ste 100, San Antonio, TX 78207. The listed phone number is (210) 921-3800.

What is Karen Olarte Merida's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Karen Olarte Merida enrolled in Medicare?

Yes. Karen Olarte Merida 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 organization bills Medicare for Karen Olarte Merida's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karen Olarte Merida reassigns Medicare benefits to Gmg Health Systems Associates PA (San Antonio, TX). The 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 Olarte Merida's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Karen Olarte Merida accept?

Health plans from UnitedHealthcare and WellPoint list Karen Olarte Merida 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.

When was this NPI record last updated?

The NPPES record for Karen Olarte Merida was last updated on July 19, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.