DR. CLIFFORD LIU M.D.
NPI 1831299528
Hospitalist in Anaheim, CA

NPI Status: Active since September 23, 2006

Contact Information

1801 W ROMNEYA DR
SUITE 409
ANAHEIM, CA
ZIP 92801
Phone: (714) 772-8282
Fax: (714) 772-8252

Get Directions Write a Review

  • Individual
  • Male
  • Years of Experience 28
  • Hospitalist
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About CLIFFORD LIU

This page provides the complete NPI Profile along with additional information for Clifford Liu, a provider established in Anaheim, California with a medical specialization in Hospitalist and more than 28 years of experience. He graduated from University Of Missouri, Kansas City, School Of Medicine in 1998. The healthcare provider is registered in the NPI registry with number 1831299528 assigned on September 2006. The practitioner's primary taxonomy code is 208M00000X with license number A70044 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1831299528
Provider Name
DR. CLIFFORD LIU M.D.
Gender
Male
Entity Type
Individual
Location Address
1801 W ROMNEYA DR SUITE 409 ANAHEIM, CA 92801
Location Phone
(714) 772-8282
Location Fax
(714) 772-8252
Mailing Address
1801 W ROMNEYA DR SUITE 409 ANAHEIM, CA 92801
Mailing Phone
(714) 772-8282
Mailing Fax
(714) 772-8252
Medical School Name
UNIVERSITY OF MISSOURI, KANSAS CITY, SCHOOL OF MEDICINE
Graduation Year
1998
Is Sole Proprietor?
No
Enumeration Date
09-23-2006
Last Update Date
07-30-2025
Code Navigator

Location Map

Secondary Locations

  • 2121 Santa Monica Blvd
    Santa Monica, CA 90404
    (310) 453-1324

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

Hospitalist

Taxonomy Code
208M00000X
Type
Allopathic & Osteopathic Physicians
License No.
A70044
License State
CA
Taxonomy Description
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

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

A70044 (CA)

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
00A700440MEDICAID (05)CA 
110226314OTHER (01)CAMEDICARE RR

Medicare Participation & PECOS Enrollment Status

Clifford Liu 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.

Clifford Liu 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: 7517011364

    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: I20090813000572

    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

Provider Referred Orders for Durable Medical Equipment, Devices & Supplies

The following list reflects the services, supplies or durable medical equipment ordered by this provider to a DME supplier on behalf of patients. The information below is derived from Medicare claims data and reflects the BETOS category, HCPCS code information and the number times each service was submitted under the Medicare fee-for-service program.

Durable Medical Equipment

  • DME-Oxygen and Supplies (DC000N)

    Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing (HCPCS:E0431)

    2 DME suppliers used 47 Medicare Claims 47 Services Paid

  • DME-Other DME (DE005N)

    Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) (HCPCS:E0466)

    1 DME suppliers used 16 Medicare Claims 16 Services Paid

  • DME-Other DME (DE000N)

    Nebulizer, with compressor (HCPCS:E0570)

    4 DME suppliers used 27 Medicare Claims 27 Services Paid

  • DME-Oxygen and Supplies (DC002N)

    Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate (HCPCS:E1390)

    2 DME suppliers used 61 Medicare Claims 61 Services Paid

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.

Follow-up hospital inpatient care per day, typically 25 minutes

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

This service was performed 493 times for 182 patients

Follow-up observation care per day, typically 25 minutes

Follow-up observation care is a daily service where your health progress is monitored for about 25 minutes. It's a routine check to ensure your treatment is effective and to adjust if necessary. It's a crucial part of your healthcare journey.

This service was performed 23 times for 21 patients

Hospital discharge day management, more than 30 minutes

Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.

This service was performed 126 times for 124 patients

Hospital observation care on day of discharge

Hospital observation care on the day of discharge involves monitoring your health status to ensure stability before you leave. This includes assessing vital signs, response to treatment, and readiness for home care or rehabilitation.

This service was performed 40 times for 40 patients

Initial hospital inpatient care per day, typically 50 minutes

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

This service was performed 65 times for 63 patients

Initial hospital observation care per day, typically 50 minutes

Initial hospital observation care is a service where healthcare professionals monitor your health for about 50 minutes daily. This helps them understand your condition better, plan treatment, and ensure your safety. It's a routine part of hospital care.

This service was performed 107 times for 104 patients

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 92801 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. CLIFFORD LIU M.D.

There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.

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 1831299528, we treat the final digit (8) 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 72. The final step is to find the difference between that total and the next multiple of ten (80 - 72 = 8).

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
8
Unchanged
Pos 3
3
Doubled → 6
Pos 4
1
Unchanged
Pos 5
2
Doubled → 4
Pos 6
9
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
5
Unchanged
Pos 9
2
Doubled → 4
Check
8
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 3 → 6 2 → 4 9 → 18 → 9 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 6 + 1 + 4 + 9 + 1 + 8 + 5 + 4 + 24 = 72

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

The next multiple of ten after 72 is 80. The difference is the calculated check digit.

80 - 72 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1831299528.

Other Providers at the Same Location


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

Internal Medicine (Nephrology)
1801 W ROMNEYA DR
ANAHEIM, CA 92801
Internal Medicine (Nephrology)
1801 W ROMNEYA DR
ANAHEIM, CA 92801
Internal Medicine (Pulmonary Disease)
1801 W ROMNEYA DR, STE 504
ANAHEIM, CA 92801
Internal Medicine (Pulmonary Disease)
1801 W ROMNEYA DR, #504
ANAHEIM, CA 92801
Nurse Practitioner (Adult Health)
1801 W ROMNEYA DR, STE. 303
ANAHEIM, CA 92801
Internal Medicine (Hematology & Oncology)
1801 W ROMNEYA DR, SUITE 501
ANAHEIM, CA 92801
Specialist
1801 W ROMNEYA DR, SUITE 501
ANAHEIM, CA 92801
Dentist
1801 W ROMNEYA DR, STE #502
ANAHEIM, CA 92801
Audiologist-Hearing Aid Fitter
1801 W ROMNEYA DR, 605
ANAHEIM, CA 92801
Specialist
1801 W ROMNEYA DR, SUITE 302
ANAHEIM, CA 92801
Dentist (Endodontics)
1801 W ROMNEYA DR, STE. 307
ANAHEIM, CA 92801
Internal Medicine
1801 W ROMNEYA DR, SUITE # 601B
ANAHEIM, CA 92801
Internal Medicine
1801 W ROMNEYA DR, SUITE # 601B
ANAHEIM, CA 92801
Nurse Practitioner (Family)
1801 W ROMNEYA DR, SUITE 409
ANAHEIM, CA 92801
Internal Medicine
1801 W ROMNEYA DR
ANAHEIM, CA 92801
Pediatrics
1801 W ROMNEYA DR, 407
ANAHEIM, CA 92801
Internal Medicine
1801 W ROMNEYA DR, STE 104
ANAHEIM, CA 92801
Dentist (Periodontics)
1801 W ROMNEYA DR, SUITE #503
ANAHEIM, CA 92801
Dentist (Oral and Maxillofacial Surgery)
1801 W ROMNEYA DR, SUITE 408
ANAHEIM, CA 92801
Dentist (Orthodontics and Dentofacial Orthopedics)
1801 W ROMNEYA DR, SUITE 509
ANAHEIM, CA 92801

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1831299528, enumerated as an "individual" on September 23, 2006.

The provider is located at 1801 W ROMNEYA DR SUITE 409 ANAHEIM, CA 92801 and the phone number is (714) 772-8282.

Hospitalist with taxonomy code 208M00000X.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.