DR. YVETTE M LOPEZ-WARREN M.D.
NPI 1164492419
Family Medicine in Frederick, MD

Q: What is Yvette Lopez-warren's NPI number?

The NPI number for Yvette Lopez-warren is 1164492419. It was assigned to this individual provider in the NPPES registry on January 26, 2006. The provider is also known as Yvette L Warren M.D..

Q: What is Yvette Lopez-warren's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Active since January 26, 2006PECOS EnrolledAccepts Medicare Assignment

1564 OPOSSUMTOWN PIKE, FREDERICK, MD 21702(301) 663-3137(301) 695-6939 Get Directions Write a Review

NPPES record last updated: July 30, 2019. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Jul 30, 2019, Jul 10, 2018 (2 updates tracked since 2018).

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About Dr. Yvette M Lopez-warren M.d. NPPES

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

DR. YVETTE M LOPEZ-WARREN M.D. (NPI 1164492419) is an individual family medicine provider in Frederick, Maryland, licensed in Maryland (D0058726) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS, is affiliated with Frederick Health Hospital, and is a graduate of Temple University School Of Medicine (1993).

NPPES Registry Identity

NPI1164492419

Entity TypeIndividualFemale

Primary Taxonomy207Q00000X

Provider Legal NameDR. YVETTE M LOPEZ-WARRENCredential: M.D.

Location Address1564 OPOSSUMTOWN PIKEFrederick, MD 21702-4359

Mailing AddressPo Box 37086Baltimore, MD 21297-3086 · (240) 439-8913 · Fax (240) 439-8910

Phone(301) 663-3137

Fax(301) 695-6939

Sole ProprietorNo

Medical School CMSTemple University School Of MedicineGraduated 1993

Enumeration DateJanuary 26, 2006

Last NPPES UpdateJuly 30, 20192 updates tracked since enumeration

✔ NPI 1164492419 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in MD · D0058726

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

1564 OPOSSUMTOWN PIKE, Frederick, MD 21702

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Other Names 1

Professional Name (2)Yvette L Warren M.d.

Other Identifiers 2

Other1977977United

Medicaid403698100MD

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. Yvette M Lopez-warren 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 ID1759273766

PECOS Enrollment IDI20040325001196

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 Yvette Lopez-warren reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Frederick Health Medical Group LLC

Same address

Family Medicine

1562 OPOSSUMTOWN PIKE
Frederick, MD 21702

Reassigned Medicare billing, Maryland enrollment
245 clinicians in this Medicare group

NPI 1619258225 (240) 215-6310

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 14

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.

460 services250 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

252 services147 patients

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.

204 services155 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

173 services173 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.

44 services44 patients

Hemoglobin a1c level 83036

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

36 services27 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.

35 services35 patients

Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit G0438

An annual wellness visit is a yearly appointment with your doctor to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's an opportunity to discuss your health status and goals and get a plan tailored for you.

22 services22 patients

Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309

A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.

21 services13 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

18 services17 patients

Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180

This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.

14 services13 patients

Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19) 87811

This is a test to detect COVID-19, the virus causing severe respiratory illness. It uses a method called immunoassay, which identifies the virus by its unique proteins. The test is directly observed for accuracy. It helps determine if you're currently infected.

13 services13 patients

Administration of vaccine 90471

Administering a vaccine involves injecting a small, safe piece of a virus or bacteria into your body. This triggers your immune system to recognize and fight off the disease in the future. It's a vital tool in preventing serious illnesses and maintaining public health.

12 services12 patients

Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment G0402

An Initial Preventive Physical Examination, also known as a "Welcome to Medicare" visit, is a one-time, face-to-face visit during your first 12 months of Medicare enrollment. It includes a review of your health, as well as education and counseling about preventive services and further screenings.

11 services11 patients

Hospital Affiliations CMS Care Compare

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

Frederick Health Hospital

Acute Care Hospitals · Frederick, MD

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210005

Location400 West Seventh StFrederick, MD 21701 · Frederick County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21702 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

$89.75 typical visit price

range $57.99 – $175.57

Typical copayment $22.43 (range $14.49 – $43.89)

Most-billed visit code 99203

Established Patient

$102.11 typical visit price

range $18.66 – $143.02

Typical copayment $25.52 (range $4.66 – $35.75)

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 10

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

7 suppliers17 claims47 services$6.94 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

5 suppliers12 claims20 services$1.20 avg. paid by Medicare

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

1 supplier13 claims13 services$14.74 avg. paid by Medicare

Wheelchair accessory, manual fully reclining back, (recline greater than 80 degrees), each E1226

DME-Wheelchairs · category DD021N

1 supplier11 claims11 services$26.43 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

1 supplier13 claims13 services$68.85 avg. paid by Medicare

Albuterol, up to 2.5 mg and ipratropium bromide, up to 0.5 mg, fda-approved final product, non-compounded, administered through dme J7620

DME-Drugs Administered Through DME · category DG006N

1 supplier13 claims840 services$0.09 avg. paid by Medicare

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

Other Providers at the Same Location NPPES 4

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

DR. EUGENE B CASAGRANDE MD

Family Medicine

1564 OPOSSUMTOWN PIKE
FREDERICK, MD 21702

Frederick County (301) 663-3137

DR. HOPE A MCINTYRE MD

Family Medicine

1564 OPOSSUMTOWN PIKE
FREDERICK, MD 21702

Frederick County (301) 663-3137

DR. JASON ERIC LOWERY MD

Family Medicine

1564 OPOSSUMTOWN PIKE
FREDERICK, MD 21702

Frederick County (843) 472-0756

DR. KIMANH T LE MD

Family Medicine

1564 OPOSSUMTOWN PIKE
FREDERICK, MD 21702

Frederick County (301) 663-3137

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 Yvette Lopez-warren's NPI number?

The NPI number for Yvette Lopez-warren is 1164492419. It was assigned to this individual provider in the NPPES registry on January 26, 2006. The provider is also known as Yvette L Warren M.D..

Where is Yvette Lopez-warren located?

Yvette Lopez-warren practices at 1564 Opossumtown Pike, Frederick, MD 21702. The listed phone number is (301) 663-3137.

What is Yvette Lopez-warren's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Yvette Lopez-warren enrolled in Medicare?

Yes. Yvette Lopez-warren 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 Yvette Lopez-warren's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Yvette Lopez-warren reassigns Medicare benefits to Frederick Health Medical Group LLC (Frederick, MD). 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 Yvette Lopez-warren's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Yvette Lopez-warren affiliated with any hospitals?

According to CMS data, Yvette Lopez-warren is affiliated with Frederick Health Hospital.

When was this NPI record last updated?

The NPPES record for Yvette Lopez-warren was last updated on July 30, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.