MELISSA N LOJA MD
NPI 1578826749
Surgery - Vascular Surgery in Fairfield, CA

NPI Status: Active since June 21, 2012

Contact Information

1860 PENNSYLVANIA AVE STE 120
FAIRFIELD, CA
ZIP 94533
Phone: (707) 646-4400

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  • Individual
  • Female
  • Years of Experience 14
  • Surgery
  • Vascular Surgery
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About MELISSA LOJA

This page provides the complete NPI Profile along with additional information for Melissa Loja, a provider established in Fairfield, California with a medical specialization in Surgery, focusing in vascular surgery and more than 14 years of experience. She graduated from University Of California, Davis School Of Medicine in 2012. The healthcare provider is registered in the NPI registry with number 1578826749 assigned on June 2012. The practitioner's primary taxonomy code is 2086S0129X with license number A127991 (CA). The provider is registered as an individual and her NPI record was last updated 5 years ago. Melissa Loja operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization.

NPI
1578826749
Provider Name
MELISSA N LOJA MD
Gender
Female
Entity Type
Individual
Location Address
1860 PENNSYLVANIA AVE STE 120 FAIRFIELD, CA 94533
Location Phone
(707) 646-4400
Mailing Address
1860 PENNSYLVANIA AVE STE 120 FAIRFIELD, CA 94533
Mailing Phone
(707) 646-4400
Mailing Fax
Medical School Name
UNIVERSITY OF CALIFORNIA, DAVIS SCHOOL OF MEDICINE
Graduation Year
2012
Is Sole Proprietor?
Yes
Enumeration Date
06-21-2012
Last Update Date
06-24-2021
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Location Map

Secondary Locations

  • 1601 Ygnacio Valley Rd
    Walnut Creek, CA 94598
    (925) 939-3000
  • 2540 East St
    Concord, CA 94520
    (925) 682-8200
  • 6001 Norris Canyon Rd
    San Ramon, CA 94583
    (925) 275-9200
  • 1200 B Gale Wilson Blvd
    Fairfield, CA 94533
    (707) 646-5000
  • 1000 Nut Tree Rd
    Vacaville, CA 95687
    (707) 624-7000

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Surgery Vascular Surgery

Taxonomy Code
2086S0129X
Type
Allopathic & Osteopathic Physicians
License No.
A127991
License State
CA
Taxonomy Description
A surgeon with expertise in the management of surgical disorders of the blood vessels, excluding the intracranial vessels or the heart.

Group Taxonomy 193200000X MULTI-SPECIALTY GROUP

This provider is a business group of one or more individual practitioners, who practice with different areas of specialization.

Medicare Participation & PECOS Enrollment Status

Melissa Loja is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Melissa Loja is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 4486920600

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20171016002476

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Balloon dilation of artery of leg, initial vessel

Balloon dilation of the artery of the leg is a procedure to improve blood flow. A small balloon is inserted into the leg artery and inflated to widen the vessel, allowing better circulation. This is typically the first vessel treated.

This service was performed 15 times for 14 patients

Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts

This procedure involves using sound waves to create images of your aorta, vena cava, groin vessels, or bypass grafts. It helps to detect abnormalities or blockages, ensuring your blood flows smoothly. It's painless and non-invasive.

This service was performed 31 times for 26 patients

Coronary angioplasty and stenting

Coronary angioplasty and stenting is a procedure to open narrowed or blocked heart arteries. A thin tube is inserted into a blood vessel, usually in the leg or arm, and guided to the heart. A small balloon at the end of the tube is inflated to widen the artery. A stent, a small wire mesh tube, may be placed in the artery to keep it open.

This service was performed for 1-10 patients

Established patient office or other outpatient visit, 10-19 minutes

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.

This service was performed 54 times for 43 patients

Established patient office or other outpatient visit, 20-29 minutes

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.

This service was performed 225 times for 145 patients

Established patient office or other outpatient visit, 30-39 minutes

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.

This service was performed 164 times for 118 patients

Initial hospital inpatient care per day, typically 30 minutes

Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.

This service was performed 13 times for 12 patients

Injection of chemical agent into multiple incompetent veins of leg

This procedure involves injecting a special chemical into problematic veins in the leg. The chemical helps to close off these veins, rerouting blood through healthier veins. This can alleviate discomfort and improve the appearance of the treated area.

This service was performed 17 times for 11 patients

Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist

This procedure involves inserting a needle or tube into your hemodialysis circuit, a system that cleans your blood when your kidneys can't. A balloon is then used to widen a narrow section of this circuit. A radiologist reviews the procedure to ensure accuracy.

This service was performed 16 times for 15 patients

Insertion of stent in arteries of leg

A stent insertion in the leg arteries is a procedure to improve blood flow. A tiny mesh tube called a stent is placed in your artery to keep it open. This helps prevent blockages, alleviating pain and aiding in better mobility.

This service was performed 13 times for 11 patients

Leg revascularization (restoring blood flow)

Leg revascularization is a procedure aimed at restoring proper blood flow to your legs. It's often needed when blood vessels in your legs are blocked or narrowed. The process may involve surgery or less invasive methods to remove or bypass blockages, helping to alleviate pain and prevent serious complications.

This service was performed for 39 patients

Melanoma (skin cancer) excision

Melanoma excision is a procedure where a surgeon removes melanoma, a type of skin cancer, and some surrounding healthy tissue. Local anesthesia is applied to numb the area. The goal is to completely remove the cancer and prevent its spread. Healing time varies.

This service was performed for 1-10 patients

New patient office or other outpatient visit, 30-44 minutes

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

This service was performed 18 times for 18 patients

New patient office or other outpatient visit, 45-59 minutes

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.

This service was performed 78 times for 78 patients

Relocation of arm vein with connection to arm artery for hemodialysis

This procedure involves moving a vein in your arm and connecting it to an artery. This creates a larger, stronger vein that can be used for hemodialysis, a treatment for kidney disease. It helps clean your blood when your kidneys can't.

This service was performed 18 times for 16 patients

Review by radiologist of arm or leg artery image

This procedure involves a radiologist examining images of your arm or leg arteries. These images are obtained through a non-invasive method, like an ultrasound or CT scan. The radiologist reviews these images to identify any abnormalities, such as blockages or narrowing, which can affect blood flow.

This service was performed 25 times for 23 patients

Review by radiologist of both arms or legs arteries image

This procedure involves a radiologist examining images of your arm or leg arteries. These images help identify any blockages or abnormalities in the blood vessels that could affect circulation. It's a vital step in diagnosing conditions related to blood flow.

This service was performed 12 times for 11 patients

Spinal fusion

Spinal fusion is a surgical procedure aimed at connecting two or more vertebrae in your spine to reduce pain and improve stability. It involves using a bone graft to cause the vertebrae to grow together, limiting the movement between them. This procedure is often performed to treat conditions like herniated discs or spinal stenosis.

This service was performed for 1-10 patients

Ultrasonic guidance for blood vessel access

Ultrasonic guidance for blood vessel access is a medical procedure where sound waves are used to create images of your blood vessels. This helps doctors to accurately locate and access the vessels for treatments or tests, ensuring safety and precision.

This service was performed 47 times for 41 patients

Ultrasonic guidance for needle placement

Ultrasonic guidance for needle placement is a technique where sound waves create images that help accurately position the needle during procedures. This method ensures precision, minimizes discomfort, and increases safety.

This service was performed 20 times for 11 patients

Ultrasound of aorta, vena cava, groin vessels or bypass grafts

This procedure involves using sound waves to create images of your aorta, vena cava, groin vessels, or bypass grafts. It helps doctors check for issues like blockages or enlargements. It's non-invasive and painless.

This service was performed 28 times for 27 patients

Ultrasound of both sides of head and neck blood flow

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

This service was performed 114 times for 89 patients

Ultrasound of hemodialysis access

An ultrasound of hemodialysis access is a non-invasive procedure that uses sound waves to create images of your dialysis access site. It helps monitor the access site's health and detect any potential issues like blockages or narrowing.

This service was performed 81 times for 51 patients

Ultrasound of leg arteries or artery grafts

An ultrasound of leg arteries or artery grafts is a non-invasive imaging test. It uses high-frequency sound waves to capture live images from inside your body, specifically your leg arteries or grafts. This helps in detecting any blockages or abnormalities.

This service was performed 52 times for 42 patients

Ultrasound of one leg arteries or artery grafts

An ultrasound of leg arteries or artery grafts is a non-invasive test using sound waves to create images of your blood vessels. This helps doctors assess blood flow, identify blockages, and monitor the health of grafts.

This service was performed 34 times for 28 patients

Ultrasound study of arm and leg arteries

An ultrasound study of arm and leg arteries is a non-invasive procedure that uses sound waves to create images of your arteries. It helps in checking blood flow, identifying blockages, or detecting other abnormalities in your arteries.

This service was performed 150 times for 109 patients

Ultrasound study of arm or leg veins with compression and maneuvers

An ultrasound study of arm or leg veins with compression and maneuvers is a non-invasive procedure that uses sound waves to create images of your veins. This helps identify blood clots or other vein problems. During the procedure, pressure is applied to the veins and certain movements are performed to assess blood flow.

This service was performed 57 times for 50 patients

Ultrasound study of one arm or leg veins with compression and maneuvers

This is a non-invasive procedure using sound waves to visualize veins in an arm or leg. It involves applying gentle pressure and performing certain movements. It helps identify any abnormal blood flow or clots, ensuring vascular health.

This service was performed 39 times for 27 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

This service was performed 71 times for 63 patients

Varicose vein removal

Varicose vein removal is a procedure to eliminate enlarged and twisted veins, commonly found in legs. It's performed when these veins cause discomfort or skin problems. The procedure may involve laser treatment, sclerotherapy (injecting a solution to close the veins), or surgery to remove the veins. It's generally safe and helps to alleviate symptoms.

This service was performed for 11 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $24.71 for a new patient copayment and $20.06 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 94533 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99203

  • Average New Patient Price $98.85
  • Minimum New Patient Price $65.02
  • Maximum New Patient Price $191.95
  • Average New Patient Copayment $24.71
  • Minimum New Patient Copayment $16.25
  • Maximum New Patient Copayment $47.98

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99213

  • Average Established Patient Price $80.24
  • Minimum Established Patient Price $21.86
  • Maximum Established Patient Price $157.69
  • Average Established Patient Copayment $20.06
  • Minimum Established Patient Copayment $5.46
  • Maximum Established Patient Copayment $39.42

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1578826749, we treat the final digit (9) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 71. The final step is to find the difference between that total and the next multiple of ten (80 - 71 = 9).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
5
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
8
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
2
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
7
Unchanged
Pos 9
4
Doubled → 8
Check
9
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 7 → 14 → 5 8 → 16 → 7 6 → 12 → 3 4 → 8

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 5 + 1 + 4 + 8 + 1 + 6 + 2 + 1 + 2 + 7 + 8 + 24 = 71

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 71 is 80. The difference is the calculated check digit.

80 - 71 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1578826749.

Other Providers at the Same Location


The following 2 providers are registered at the same or a nearby location.

Clinic/Center (Medical Specialty)
1860 PENNSYLVANIA AVE STE 120
FAIRFIELD, CA 94533
Nurse Practitioner (Acute Care)
1860 PENNSYLVANIA AVE STE 120
FAIRFIELD, CA 94533

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1578826749, enumerated as an "individual" on June 21, 2012.

The provider is located at 1860 PENNSYLVANIA AVE STE 120 FAIRFIELD, CA 94533 and the phone number is (707) 646-4400.

Surgery with taxonomy code 2086S0129X and a focus in Vascular Surgery.