MRS. CASSANDRA BLAYLOCK NP
NPI 1588043400
Internal Medicine - Hematology & Oncology in Santa Monica, CA

NPI Status: Active since May 26, 2015

Contact Information

1250 16TH ST
SANTA MONICA, CA
ZIP 90404
Phone: (424) 259-9457
Fax: (424) 259-6823

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  • Individual
  • Female
  • Years of Experience 11
  • Internal Medicine
  • Hematology & Oncology
  • May Accept Medicare Approved Payment
  • PECOS Enrolled

About CASSANDRA BLAYLOCK

This page provides the complete NPI Profile along with additional information for Cassandra Blaylock, an internist established in Santa Monica, California with a medical specialization in Internal Medicine, focusing in hematology & oncology and more than 11 years of experience. The healthcare provider is registered in the NPI registry with number 1588043400 assigned on May 2015. The practitioner's primary taxonomy code is 207RH0003X with license number 95003118 (CA). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1588043400
Provider Name
MRS. CASSANDRA BLAYLOCK NP
Other Name
CASSANDRA YAMAGUCHI
Other Name Type
Former Name (1)
Gender
Female
Entity Type
Individual
Location Address
1250 16TH ST SANTA MONICA, CA 90404
Location Phone
(424) 259-9457
Location Fax
(424) 259-6823
Mailing Address
5767 W CENTURY BLVD STE 400 LOS ANGELES, CA 90045
Medical School Name
OTHER
Graduation Year
2015
Is Sole Proprietor?
Yes
Enumeration Date
05-26-2015
Last Update Date
10-01-2025
Code Navigator

An internist like Cassandra Blaylock 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.

Location Map

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 Hematology & Oncology

Taxonomy Code
207RH0003X
Type
Allopathic & Osteopathic Physicians
License No.
95003118
License State
CA
Taxonomy Description
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

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)
1363LF0000XPhysician Assistants & Advanced Practice Nursing Providers

Nurse Practitioner
Family

95003118 (CA)

Medicare Participation & PECOS Enrollment Status

Cassandra Blaylock is registered with Medicare but maybe doesn't accept claims assignment. If you are a Medicare beneficiary call and confirm with the provider before seeking any services.

Cassandra Blaylock 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: 7416202502

    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: I20250923004115

    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? Maybe

    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 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 90404 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99205

  • Average New Patient Price $187.6
  • Minimum New Patient Price $62.96
  • Maximum New Patient Price $187.6
  • Average New Patient Copayment $46.9
  • 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.

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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 1588043400, we treat the final digit (0) 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 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).

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
8
Doubled → 16 → 1 + 6
Pos 4
8
Unchanged
Pos 5
0
Doubled → 0
Pos 6
4
Unchanged
Pos 7
3
Doubled → 6
Pos 8
4
Unchanged
Pos 9
0
Doubled → 0
Check
0
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 8 → 16 → 7 0 → 0 3 → 6 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 1 + 6 + 8 + 0 + 4 + 6 + 4 + 0 + 24 = 60

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

The next multiple of ten after 60 is 60. The difference is the calculated check digit.

60 - 60 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1588043400.

Other Providers at the Same Location


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

Emergency Medicine
1250 16TH ST, EMERGENCY DEPARTMENT
SANTA MONICA, CA 90404
Anesthesiology
1250 16TH ST
SANTA MONICA, CA 90404
Emergency Medicine
1250 16TH ST, EMERGENCY DEPARTMENT
SANTA MONICA, CA 90404
Orthopaedic Surgery
1250 16TH ST, SUITE 3142
SANTA MONICA, CA 90404
Emergency Medicine
1250 16TH ST, EMERGENCY DEPARTMENT
SANTA MONICA, CA 90404
Nurse Practitioner (Family)
1250 16TH ST
SANTA MONICA, CA 90404
Emergency Medicine
1250 16TH ST, EMERGENCY DEPARTMENT
SANTA MONICA, CA 90404
Anesthesiology
1250 16TH ST
SANTA MONICA, CA 90404
Anesthesiology
1250 16TH ST
SANTA MONICA, CA 90404
General Acute Care Hospital
1250 16TH ST
SANTA MONICA, CA 90404
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
1250 16TH ST
SANTA MONICA, CA 90404
Durable Medical Equipment & Medical Supplies
1250 16TH ST, 1 FLOOR EMERGENCY DEPARTMENT
SANTA MONICA, CA 90404
Pharmacist
1250 16TH ST
SANTA MONICA, CA 90404
Emergency Medicine
1250 16TH ST, EMERGENCY DEPARTMENT
SANTA MONICA, CA 90404
Hospitalist
1250 16TH ST, SUITE A454
SANTA MONICA, CA 90404
Respiratory Therapist, Registered (Neonatal/Pediatrics)
1250 16TH ST
SANTA MONICA, CA 90404
Anesthesiology
1250 16TH ST
SANTA MONICA, CA 90404
Nurse Practitioner (Family)
1250 16TH ST
SANTA MONICA, CA 90404
Nurse Practitioner (Family)
1250 16TH ST
SANTA MONICA, CA 90404
Anesthesiology
1250 16TH ST
SANTA MONICA, CA 90404

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1588043400, enumerated as an "individual" on May 26, 2015.

The provider is located at 1250 16TH ST SANTA MONICA, CA 90404 and the phone number is (424) 259-9457.

Internal Medicine with taxonomy code 207RH0003X and a focus in Hematology & Oncology.