DR. MARLON DECASTRO M.D.
NPI 1780643270
Internal Medicine in Santa Rosa, CA

Q: What is Marlon Decastro's NPI number?

The NPI number for Marlon Decastro is 1780643270. It was assigned to this individual provider in the NPPES registry on March 22, 2006.

Q: What is Marlon Decastro'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 Marlon Decastro was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since March 22, 2006PECOS EnrolledAccepts Medicare Assignment

500 DOYLE PARK DR, STE. 303, SANTA ROSA, CA 95405(707) 303-8300(707) 303-8301 Get Directions Write a Review

NPPES record last updated: March 7, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Mar 7, 2023, Oct 21, 2021, Jan 25, 2021 (3 updates tracked since 2021).

On this page

About Dr. Marlon Decastro M.d. NPPES

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

DR. MARLON DECASTRO M.D. (NPI 1780643270) is an individual internal medicine provider in Santa Rosa, California, licensed in California (C53594) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1997).

NPPES Registry Identity

NPI1780643270

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. MARLON DECASTROCredential: M.D.

Location Address500 DOYLE PARK DR, STE. 303Santa Rosa, CA 95405-4558

Mailing Address500 Doyle Park Dr, Ste 303Santa Rosa, CA 95405-4558 · (707) 303-8300 · Fax (707) 303-8301

Phone(707) 303-8300

Fax(707) 303-8301

Sole ProprietorNo

Medical School CMSOtherGraduated 1997

Enumeration DateMarch 22, 2006

Last NPPES UpdateMarch 7, 20233 updates tracked since enumeration

NPPES CertifiedOctober 21, 2021

✔ NPI 1780643270 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Licenses✔ Licensed in CA · C53594✔ Licensed in SC · 23181

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.

500 DOYLE PARK DR, Santa Rosa, CA 95405

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Other Identifiers 4

OtherC53594CA · Ca License

Other23181SC · State License

Other20-23181SC · Dhec

Medicaid231813SC

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. Marlon Decastro 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 ID9234131905

PECOS Enrollment IDI20100316000335

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 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.

Injection, denosumab, 1 mg J0897

Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.

1,020 services14 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.

751 services385 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.

166 services128 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.

94 services93 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.

87 services82 patients

Influenza vaccine, inactivated 90653

The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.

83 services83 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.

30 services30 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.

30 services30 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.

28 services25 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.

22 services22 patients

Urinalysis, manual test 81002

A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.

20 services19 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

20 services16 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.

20 services20 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95405 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

$142.00 typical visit price

range $63.04 – $187.01

Typical copayment $35.50 (range $15.76 – $46.75)

Most-billed visit code 99204

Established Patient

$109.88 typical visit price

range $21.02 – $153.40

Typical copayment $27.47 (range $5.25 – $38.35)

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 7

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

10 suppliers28 claims68 services$6.05 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

9 suppliers17 claims21 services$1.02 avg. paid by Medicare

Ostomy pouch, drainable, with extended wear barrier attached, (1 piece), each A4388

DME-Orthotic Devices · category DF010N

1 supplier11 claims220 services$3.37 avg. paid by Medicare

Enteral formula, nutritionally complete with intact nutrients, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4150

Other-Enteral and Parenteral · category OB006N

1 supplier13 claims7,020 services$0.37 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

6 suppliers40 claims40 services$85.37 avg. paid by Medicare

Portable oxygen concentrator, rental E1392

DME-Oxygen and Supplies · category DC002N

3 suppliers24 claims24 services$36.23 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 20

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

LEO ARTHUR SMITH MD

Family Medicine

500 DOYLE PARK DR, SUITE G-04
SANTA ROSA, CA 95405

Sonoma County (707) 303-8360

CYNTHIA R. INGELS MSN,N.P.

Nurse Practitioner (Family)

500 DOYLE PARK DR, SUITE 103
SANTA ROSA, CA 95405

Sonoma County (707) 579-1102

DR. JAMES CHARLES DEVORE MD

Family Medicine

500 DOYLE PARK DR, SUITE G04
SANTA ROSA, CA 95405

Sonoma County (707) 303-8360

DR. TOMAS VASILIAUSKAS M.D.

Internal Medicine (Cardiovascular Disease)

500 DOYLE PARK DR, SUITE G05
SANTA ROSA, CA 95405

Sonoma County (707) 576-7100

ERAN MATALON M.D.

Internal Medicine

500 DOYLE PARK DR, SUITE 304
SANTA ROSA, CA 95405

Sonoma County (707) 545-1700

RAMZI KHALIL DEEIK M.D.

Thoracic Surgery (Cardiothoracic Vascular Surgery)

500 DOYLE PARK DR, SUITE G-05
SANTA ROSA, CA 95405

Sonoma County (707) 255-8825

DR. JOEL E PAINE MD

Internal Medicine

500 DOYLE PARK DR, SUITE 300
SANTA ROSA, CA 95405

Sonoma County (707) 303-8344

ANNADEL MEDICAL GROUP, INC

Pediatrics

500 DOYLE PARK DR, SUITE 100
SANTA ROSA, CA 95405

Sonoma County (707) 544-6090

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 Marlon Decastro's NPI number?

The NPI number for Marlon Decastro is 1780643270. It was assigned to this individual provider in the NPPES registry on March 22, 2006.

Where is Marlon Decastro located?

Marlon Decastro practices at 500 Doyle Park Dr Ste. 303, Santa Rosa, CA 95405. The listed phone number is (707) 303-8300.

What is Marlon Decastro's specialty?

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

Is Marlon Decastro enrolled in Medicare?

Yes. Marlon Decastro 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.

When was this NPI record last updated?

The NPPES record for Marlon Decastro was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.