DR. RONALD CASTILLO TEJADA JR. MD
NPI 1407165079
Internal Medicine in Lakewood, CA

NPI Status: Active since September 30, 2010

Contact Information

3300 E SOUTH ST
SUITE 205
LAKEWOOD, CA
ZIP 90805
Phone: (562) 531-0377
Fax: (562) 531-1724

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  • Individual
  • Male
  • Years of Experience 22
  • Internal Medicine
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About RONALD TEJADA

This page provides the complete NPI Profile along with additional information for Ronald Tejada, an internist established in Lakewood, California with a medical specialization in Internal Medicine and more than 22 years of experience. The healthcare provider is registered in the NPI registry with number 1407165079 assigned on September 2010. The practitioner's primary taxonomy code is 207R00000X with license number A118334 (CA). The provider is registered as an individual and his NPI record was last updated 13 years ago.

NPI
1407165079
Provider Name
DR. RONALD CASTILLO TEJADA JR. MD
Gender
Male
Entity Type
Individual
Location Address
3300 E SOUTH ST SUITE 205 LAKEWOOD, CA 90805
Location Phone
(562) 531-0377
Location Fax
(562) 531-1724
Mailing Address
3300 E SOUTH ST SUITE 205 LAKEWOOD, CA 90805
Mailing Phone
(562) 531-0377
Mailing Fax
(562) 531-1724
Medical School Name
OTHER
Graduation Year
2004
Is Sole Proprietor?
Yes
Enumeration Date
09-30-2010
Last Update Date
10-01-2012
Code Navigator

An internist like Ronald Tejada is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

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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

Internal Medicine

Taxonomy Code
207R00000X
Type
Allopathic & Osteopathic Physicians
License No.
A118334
License State
CA
Taxonomy Description
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.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1207R00000XAllopathic & Osteopathic Physicians

Internal Medicine

036130801 (IL)

Medicare Participation & PECOS Enrollment Status

Ronald Tejada 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.

Ronald Tejada 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: 1557513207

    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: I20121204000426

    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

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $35.59 for a new patient copayment and $27.49 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 90805 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $142.39
  • Minimum New Patient Price $62.96
  • Maximum New Patient Price $187.6
  • Average New Patient Copayment $35.59
  • Minimum New Patient Copayment $15.74
  • Maximum New Patient Copayment $46.9

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $109.96
  • Minimum Established Patient Price $20.84
  • Maximum Established Patient Price $153.61
  • Average Established Patient Copayment $27.49
  • Minimum Established Patient Copayment $5.21
  • Maximum Established Patient Copayment $38.4

* 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.

Reviews for DR. RONALD CASTILLO TEJADA JR. MD

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NPI Validation Check Digit Calculation


The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.

Start with the original NPI number, the last digit is the check digit and is not used in the calculation.
1407165079
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
24072610014
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 4 + 0 + 7 + 2 + 6 + 1 + 0 + 0 + 1 + 4 + 24 = 51
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
60 - 51 = 99

The NPI number 1407165079 is valid because the calculated check digit 9 using the Luhn validation algorithm matches the last digit of the original NPI number.

Other Providers at the Same Location


The following 20 providers are registered at the same or nearby location.

NPI Name / Type Taxonomy Address
1164406021LAKEWOOD EYE PHYSICIANS AND SURGEONS INC A MEDICAL GROUP
Organization
Specialist3300 E SOUTH ST SUITE 105
LONG BEACH, CA 90805
(562) 531-2020
1265499719DR. ALEX HSU MD
Individual
Internal Medicine (Nephrology)3300 E SOUTH ST
LAKEWOOD, CA 90805
(562) 630-7279
1376593657DR. GNYANDEV PATEL M.D.
Individual
Specialist3300 E SOUTH ST SUITE # 206
LAKEWOOD, CA 90805
(562) 232-2378
1255357315MOTI S DASWANI MD INC
Organization
Internal Medicine (Nephrology)3300 E SOUTH ST 110
LONG BEACH, CA 90805
(562) 630-7279
1821014879 TAE Y LEE MD
Individual
Internal Medicine (Nephrology)3300 E SOUTH ST # 110
LONG BEACH, CA 90805
(562) 630-7279
1053327239DR. RICHARD ARTHUR ROSENBERG DPM
Individual
Podiatrist3300 E SOUTH ST SUITE #306
LAKEWOOD, CA 90805
(562) 633-5881
1679677967DR. ALEX KUTAS MD
Individual
Internal Medicine (Endocrinology, Diabetes & Metabolism)3300 E SOUTH ST SUITE 103
LONG BEACH, CA 90805
(562) 634-9803
1598861882 ADARSH DASWANI M.D.
Individual
Internal Medicine (Nephrology)3300 E SOUTH ST SUITE 110
LAKEWOOD, CA 90805
(562) 630-7279
1013084979 DAVID L. VANNIX MD
Individual
Surgery3300 E SOUTH ST SUITE #203
LAKEWOOD, CA 90805
(562) 630-8821
1518015916 KIT H LEE MD
Individual
Pediatrics3300 E SOUTH ST 204
LAKEWOOD, CA 90805
(562) 602-1733
1447454814 PEDRO OLMEDOCOLOR PA-C
Individual
Physician Assistant3300 E SOUTH ST SUITE 305
LAKEWOOD, CA 90805
(562) 622-8102
1295934610SULTANALI ALIDINA M.D., INC.
Organization
Internal Medicine (Hematology & Oncology)3300 E SOUTH ST SUITE 209
LAKEWOOD, CA 90805
(562) 630-3434
1912183054SEHGAL MEDICAL CORPORATION
Organization
Internal Medicine (Pulmonary Disease)3300 E SOUTH ST SUITE 305
LAKEWOOD, CA 90805
(562) 817-5602
1043473390LAKEWOOD EYE PHYSICIANS AND SURGEONS INC A MEDICAL GROUP
Organization
Clinic/Center (Ambulatory Surgical)3300 E SOUTH ST SUITE 107
LONG BEACH, CA 90805
(562) 531-2020
1689978140MRS. AMY ELIZABETH POUND LCSW
Individual
Social Worker (Clinical)3300 E SOUTH ST
LAKEWOOD, CA 90805
(562) 232-1144
1114218559JESSE J LICUANAN MD A MEDICAL CORPORATION
Organization
Internal Medicine3300 E SOUTH ST SUITE 205
LAKEWOOD, CA 90805
(562) 531-0377
1306115332MS. THERESA ADELE SMITH N.P.
Individual
Nurse Practitioner (Psychiatric/Mental Health)3300 E SOUTH ST SUITE #: 102
LAKEWOOD, CA 90805
(562) 232-1144
1154693307ROHUN MEDICAL CORPORATION
Organization
Specialist3300 E SOUTH ST SUITE 206
LAKEWOOD, CA 90805
(562) 232-2378
1063411684 SULTANALI ALIDINA M.D.
Individual
Internal Medicine (Hematology & Oncology)3300 E SOUTH ST SUITE 209
LAKEWOOD, CA 90805
(562) 630-3434
1235310723NEHA MEDICAL CORPORATION INC.
Organization
Specialist3300 E SOUTH ST 206
LAKEWOOD, CA 90805
(562) 232-2378

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1407165079, enumerated in the NPI registry as an "individual" on September 30, 2010

The provider is located at 3300 E South St Suite 205 Lakewood, Ca 90805 and the phone number is (562) 531-0377

The provider's speciality is Internal Medicine with taxonomy code 207R00000X

The provider has more than 22 years of experience.

Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary 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.

Medicare beneficiaries should expect a typical cost of $142.39 with an average copayment of $35.59 for new patient appointments. Established patients should expect a typical charge of $109.96 and an average copayment of 27.49. Please review your insurance plan or contact the provider directly to determine your specific costs.

This NPI record was last updated on September 30, 2010. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
NPI Profile data is regularly updated with the latest NPI registry information, if you would like to update or remove your NPI Profile in this website please contact us.