DR. MARY FREKKO KILAVOS M.D.
NPI 1609841188
Internal Medicine in Gaithersburg, MD

Q: What is Mary Kilavos's NPI number?

The NPI number for Mary Kilavos is 1609841188. It was assigned to this individual provider in the NPPES registry on February 20, 2006. The provider is also known as Dr. Mary Ilona Frekko M.D..

Q: What is Mary Kilavos's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Mary Kilavos was last updated on April 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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 February 20, 2006PECOS EnrolledAccepts Medicare Assignment

818 WEST DIAMOND AVENUE, STE 130, GAITHERSBURG, MD 20878(301) 948-8780(301) 519-9093 Get Directions Write a Review

NPPES record last updated: April 21, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Dr. Mary Frekko Kilavos M.d. NPPES

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

DR. MARY FREKKO KILAVOS M.D. (NPI 1609841188) is an individual internal medicine provider in Gaithersburg, Maryland, licensed in Maryland (D0062800) and active in the NPI registry since February 2006. She is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Hospital, The, and is a graduate of Georgetown University School Of Medicine (2002).

NPPES Registry Identity

NPI1609841188

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameDR. MARY FREKKO KILAVOSCredential: M.D.

Location Address818 WEST DIAMOND AVENUE, STE 130Gaithersburg, MD 20878

Mailing Address818 West Diamond Avenue, Ste 130Gaithersburg, MD 20878 · (301) 948-8780 · Fax (301) 519-9093

Phone(301) 948-8780

Fax(301) 519-9093

Sole ProprietorNo

Medical School CMSGeorgetown University School Of MedicineGraduated 2002

Enumeration DateFebruary 20, 2006

Last NPPES UpdateApril 21, 2025

NPPES CertifiedApril 21, 2025

✔ NPI 1609841188 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Licenses✔ Licensed in MD · D0062800✔ Licensed in DC · MD046987

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.

818 WEST DIAMOND AVENUE, Gaithersburg, MD 20878

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Other Names 1

Former Name (1)Dr. Mary Ilona Frekko M.d.

Other Identifiers 1

Other492066MD · Medicare

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Mary Frekko Kilavos 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 ID8325069743

PECOS Enrollment IDI20051213000854, I20150318000523

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.

Areas of Expertise CMS Part B claims 15

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.

603 services316 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.

296 services296 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

209 services148 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.

123 services82 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.

75 services74 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.

73 services72 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.

61 services44 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

40 services37 patients

Automated urinalysis test 81003

An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.

33 services32 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.

22 services22 patients

Electrocardiogram, routine ecg with 12 leads; performed as a screening for the initial preventive physical examination with interpretation and report G0403

An Electrocardiogram (ECG) with 12 leads is a non-invasive test that measures the electrical activity of your heart. It's performed during your initial physical examination to screen for heart conditions. The results are interpreted and compiled into a report for further evaluation.

19 services19 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.

18 services16 patients

Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 90677

The Pneumococcal Conjugate Vaccine (PCV20) is a shot given to protect against 20 types of bacteria that can cause serious infections like pneumonia and meningitis. It's administered through a muscle, usually in the arm. It's important for overall health.

12 services12 patients

Administration of pneumococcal vaccine G0009

The pneumococcal vaccine helps protect against pneumococcal bacteria, which can cause severe infections like pneumonia and meningitis. The vaccine is given as an injection, typically in the arm. It's recommended for infants, older adults, and those with certain health conditions.

11 services11 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.

11 services11 patients

Hospital Affiliations CMS Care Compare 2

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

Johns Hopkins Hospital, The

Acute Care Hospitals · Baltimore, MD

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210009

Location600 North Wolfe StreetBaltimore, MD 21287 · Baltimore City County

Emergency services Birthing friendly

Suburban Hospital

Acute Care Hospitals · Bethesda, MD

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210022

Location8600 Old Georgetown RoadBethesda, MD 20814 · Montgomery County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20878 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

$147.85 typical visit price

range $65.18 – $194.86

Typical copayment $36.96 (range $16.29 – $48.71)

Most-billed visit code 99204

Established Patient

$113.72 typical visit price

range $21.40 – $158.88

Typical copayment $28.43 (range $5.35 – $39.72)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

e-Prescribing

At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.

98%4,584 patients4/55-star benchmark: 99%

Health Information Exchange

The MIPS eligible clinician that transitions or refers their patient to another setting of care or health care clinician (1) uses CEHRT to create a summary of care record; and (2) electronically transmits such summary to a receiving health care clinician for…

77%803 patients4/55-star benchmark: 88%

Medication Reconciliation

The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.

99%144 patients4/55-star benchmark: 100%

Patient-Specific Education

The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.

93%1,910 patients4/55-star benchmark: 97%

Provide Patient Access

At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…

98%1,910 patients4/55-star benchmark: 100%

Secure Messaging

For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…

93%1,910 patients5/55-star benchmark: 89%

View, Download, or Transmit (VDT)

At least one patient seen by the MIPS eligible clinician during the performance period (or patient-authorized representative) views, downloads or transmits their health information to a third party during the performance period.

70%1,910 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 2

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

14 suppliers28 claims60 services$5.64 avg. paid by Medicare

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553

DME-Other DME · category DE017N

3 suppliers24 claims24 services$199.24 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 3

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

DR. KATHLEEN FREKKO FARRELL M.D.

Internal Medicine

818 WEST DIAMOND AVENUE, STE 130
GAITHERSBURG, MD 20878

Montgomery County (301) 948-8780

FREKKO PRIMARY CARE LLC

Family Medicine (Adult Medicine)

818 WEST DIAMOND AVENUE, STE 130
GAITHERSBURG, MD 20878

Montgomery County (301) 948-8780

DR. ANN FREKKO RAFFO MD

Internal Medicine

818 WEST DIAMOND AVENUE, STE 130
GAITHERSBURG, MD 20878

Montgomery County (301) 948-8780

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 Mary Kilavos's NPI number?

The NPI number for Mary Kilavos is 1609841188. It was assigned to this individual provider in the NPPES registry on February 20, 2006. The provider is also known as Dr. Mary Ilona Frekko M.D..

Where is Mary Kilavos located?

Mary Kilavos practices at 818 West Diamond Avenue Ste 130, Gaithersburg, MD 20878. The listed phone number is (301) 948-8780.

What is Mary Kilavos's specialty?

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

Is Mary Kilavos enrolled in Medicare?

Yes. Mary Kilavos 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.

Is Mary Kilavos affiliated with any hospitals?

According to CMS data, Mary Kilavos is affiliated with Johns Hopkins Hospital, The and Suburban Hospital.

When was this NPI record last updated?

The NPPES record for Mary Kilavos was last updated on April 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.