DR. WILLIAM ARTHUR PULLEN M.D.
NPI 1104977248
Internal Medicine - Endocrinology, Diabetes & Metabolism in Glendale, CA

NPI Status: Active since January 16, 2007

Contact Information

450 N BRAND BLVD STE 600
GLENDALE, CA
ZIP 91203
Phone: (818) 369-1170

Get Directions Write a Review

  • Individual
  • Male
  • Years of Experience 44
  • Internal Medicine
  • Endocrinology, Diabetes & Metabolism
  • Accepts Medicare Approved Payment
  • PECOS Enrolled
  • CLIA Number: 05D0550065
  • CLIA Cert. Type: Physician Office
  • CLIA Exp. Date: 10-31-2025

About WILLIAM PULLEN

This page provides the complete NPI Profile along with additional information for William Pullen, an internist established in Glendale, California with a medical specialization in Internal Medicine, focusing in endocrinology, diabetes & metabolism and more than 44 years of experience. The healthcare provider is registered in the NPI registry with number 1104977248 assigned on January 2007. The practitioner's primary taxonomy code is 207RE0101X with license number A41473 (CA). The provider is registered as an individual and his NPI record was last updated April 2026.

NPI
1104977248
Provider Name
DR. WILLIAM ARTHUR PULLEN M.D.
Gender
Male
Entity Type
Individual
Location Address
450 N BRAND BLVD STE 600 GLENDALE, CA 91203
Location Phone
(818) 369-1170
Mailing Address
450 N BRAND BLVD STE 600 GLENDALE, CA 91203
Medical School Name
OTHER
Graduation Year
1982
Is Sole Proprietor?
Yes
Enumeration Date
01-16-2007
Last Update Date
04-10-2026
Code Navigator

An internist like William Pullen 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 Endocrinology, Diabetes & Metabolism

Taxonomy Code
207RE0101X
Type
Allopathic & Osteopathic Physicians
License No.
A41473
License State
CA
Taxonomy Description
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

Medicare Participation & PECOS Enrollment Status

William Pullen 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.

William Pullen 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: 1759574502

    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: I20101025000826

    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-Other DME (DE017N)

    Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips (HCPCS:A4253)

    4 DME suppliers used 13 Medicare Claims 54 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.

Administration of influenza virus vaccine

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.

This service was performed 72 times for 72 patients

Administration of pneumococcal vaccine

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.

This service was performed 40 times for 40 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

This service was performed 71 times for 71 patients

Blood test, basic group of blood chemicals (calcium, total)

A basic group blood test measures the levels of certain chemicals in your blood, including calcium. This helps assess your overall health and detect potential problems. The procedure involves drawing a small amount of blood from your arm, which is then analyzed in a lab.

This service was performed 13 times for 13 patients

Blood test, comprehensive group of blood chemicals

A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.

This service was performed 476 times for 185 patients

Blood test, lipids (cholesterol and triglycerides)

A lipid panel is a blood test that measures fats and fatty substances, such as cholesterol and triglycerides. These substances are used by your body as a source of energy. High levels can lead to health issues, including heart disease.

This service was performed 220 times for 122 patients

Blood test, thyroid stimulating hormone (tsh)

A TSH blood test measures the level of thyroid stimulating hormone in your body. This hormone is produced by the pituitary gland and regulates how your thyroid works. It's a simple procedure where a small amount of blood is drawn from your arm for analysis.

This service was performed 246 times for 141 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count

A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.

This service was performed 458 times for 184 patients

Creatine kinase (cardiac enzyme) level, total

The total Creatine Kinase (CK) level test is a blood test that helps assess the health of your heart. It measures an enzyme called CK that's released into the bloodstream when heart or other muscle tissue is damaged. High levels may indicate a heart attack or muscle disorder.

This service was performed 164 times for 92 patients

Dxa bone density measurement of hip, pelvis, spine

A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.

This service was performed 27 times for 27 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 577 times for 176 patients

Established patient office or other outpatient visit, 40-54 minutes

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.

This service was performed 103 times for 100 patients

Ferritin (blood protein) level

A Ferritin level test measures the amount of ferritin, a protein that stores iron, in your blood. It helps determine how much iron your body is storing. If levels are low, it may indicate iron deficiency, while high levels could signify conditions like iron overload.

This service was performed 64 times for 40 patients

Glutamyltransferase (liver enzyme) level

Glutamyltransferase (GGT) level is a blood test that helps check your liver's health. High GGT levels may indicate liver disease or damage. The test involves a simple blood draw and results help your doctor understand your liver's condition better.

This service was performed 54 times for 32 patients

Hemoglobin a1c level

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

This service was performed 144 times for 74 patients

Influenza vaccine split virus, preservative free

The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.

This service was performed 72 times for 72 patients

Insertion of needle into vein for collection of blood sample

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

This service was performed 586 times for 192 patients

Iron binding capacity

Iron binding capacity is a blood test that measures how well your body can bind and transport iron. This helps your healthcare provider assess if your body has too little or too much iron, which can indicate certain health conditions.

This service was performed 63 times for 40 patients

Iron level

An iron level test measures the amount of iron in your blood. Iron is crucial for producing hemoglobin, a protein in red blood cells that carries oxygen throughout your body. This test helps identify iron deficiencies or excesses, which can lead to conditions like anemia or hemochromatosis.

This service was performed 63 times for 40 patients

Magnesium level

A magnesium level test is a simple blood test that measures the amount of magnesium in your body. Magnesium is a crucial mineral that helps your nerves, muscles, and heart function properly. The test can help detect health conditions like kidney disease or malnutrition.

This service was performed 82 times for 76 patients

Manual urinalysis test with examination using microscope, non-automated

A manual urinalysis test involves studying a urine sample under a microscope. This non-automated method helps identify any abnormal substances present. It's a useful tool for detecting potential health concerns early. The process is simple and non-invasive.

This service was performed 160 times for 108 patients

Measure of severe acute respiratory syndrome coronavirus 2 (covid-19) antibody

This procedure checks for antibodies to the COVID-19 virus in your blood. It indicates whether you've had a past infection. The body produces these antibodies while fighting off the virus. It's not a test for current infection.

This service was performed 212 times for 125 patients

Measurement c-reactive protein for detection of infection or inflammation, high sensitivity

The high sensitivity C-reactive protein test is a blood test that helps detect low levels of inflammation in the body. It's often used to assess the risk of heart disease but can also indicate infection or other inflammatory conditions.

This service was performed 189 times for 121 patients

Phosphate level

A phosphate level test measures the amount of phosphate in your blood. Phosphate is a chemical that contains the mineral phosphorus, crucial for energy production, muscle and nerve function, and bone growth. Imbalances may indicate kidney disease or other health issues.

This service was performed 21 times for 14 patients

Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use

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.

This service was performed 35 times for 35 patients

Psa (prostate specific antigen) measurement, total

PSA measurement is a simple blood test that checks for a specific protein produced by your body. High levels could indicate a health issue that needs further investigation. It's often used to monitor general wellness and is part of routine health screening.

This service was performed 32 times for 22 patients

Red blood cell sedimentation rate, to detect inflammation, non-automated

The Red Blood Cell Sedimentation Rate test measures how quickly red blood cells settle at the bottom of a test tube. If they settle faster than normal, it may indicate inflammation in the body. This test is non-automated, meaning it's manually performed by a lab technician.

This service was performed 162 times for 114 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

This service was performed 110 times for 94 patients

Thyroid hormone, t3 measurement, free

The T3 measurement, free, is a blood test that checks the level of a hormone called triiodothyronine. This hormone is produced by your thyroid, a small gland in your neck. It plays a key role in regulating your body's metabolism and energy use.

This service was performed 154 times for 86 patients

Thyroxine (thyroid chemical), free

The Thyroxine (thyroid chemical), free test is a blood test that measures the level of free T4 in your body. T4 is a hormone produced by your thyroid gland and is essential for growth and metabolism. If your T4 levels are too high or too low, it could indicate a thyroid disorder.

This service was performed 242 times for 139 patients

Uric acid level, blood

A blood uric acid level test measures the amount of uric acid in your blood. Uric acid is a waste product that your body produces when it breaks down purines, substances found in your body and in certain foods. High levels may lead to gout or kidney stones.

This service was performed 68 times for 36 patients

Vitamin d-3 level

A Vitamin D-3 level test measures the amount of Vitamin D-3, a crucial nutrient, in your body. This test helps identify if your levels are too low or too high. Low levels may lead to bone weakness, while high levels could harm your kidneys. It's a simple blood test.

This service was performed 35 times for 34 patients

X-ray of chest, 2 views

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

This service was performed 130 times for 111 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 91203 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.

CLIA Information

The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:

CLIA Number
05D0550065
Facility Type
Physician Office
Certificate Effective Date
May 30, 2022
Certificate Expiration Date
October 31, 2025
Laboratory Director
WILLIAM A. PULLEN
Certificate Type
Certificate of Compliance
Certificate Type Description
This CLIA certificate is issued to William Pullen after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements. This type of certificate is issued to laboratories that perform nonwaived (moderate and/or high complexity) testing.

Reviews for DR. WILLIAM ARTHUR PULLEN 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 1104977248, 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 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
1
Unchanged
Pos 3
0
Doubled → 0
Pos 4
4
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
7
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
2
Unchanged
Pos 9
4
Doubled → 8
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 0 → 0 9 → 18 → 9 7 → 14 → 5 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 0 + 4 + 1 + 8 + 7 + 1 + 4 + 2 + 8 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1104977248.

Other Providers at the Same Location


The following 18 providers are registered at the same or a nearby location.

In Home Supportive Care
450 N BRAND BLVD STE 600
GLENDALE, CA 91203
Clinic/Center
450 N BRAND BLVD STE 600
GLENDALE, CA 91203
Physical Therapist
450 N BRAND BLVD STE 600
GLENDALE, CA 91203
Home Health
450 N BRAND BLVD STE 600
GLENDALE, CA 91203
Hospice Care, Community Based
450 N BRAND BLVD STE 600
GLENDALE, CA 91203
Hospice Care, Community Based
450 N BRAND BLVD STE 600
GLENDALE, CA 91203
Nurse Practitioner (Family)
450 N BRAND BLVD STE 600
GLENDALE, CA 91203
Nurse Practitioner (Family)
450 N BRAND BLVD STE 600
GLENDALE, CA 91203
Family Medicine
450 N BRAND BLVD STE 600
GLENDALE, CA 91203
Family Medicine
450 N BRAND BLVD STE 600
GLENDALE, CA 91203
Internal Medicine
450 N BRAND BLVD STE 600
GLENDALE, CA 91203
Social Worker (Clinical)
450 N BRAND BLVD STE 600
GLENDALE, CA 91203
Nurse Practitioner (Family)
450 N BRAND BLVD STE 600
GLENDALE, CA 91203
Independent Medical Examiner
450 N BRAND BLVD STE 600
GLENDALE, CA 91203
Marriage & Family Therapist
450 N BRAND BLVD STE 600
GLENDALE, CA 91203
Psychologist
450 N BRAND BLVD STE 600
GLENDALE, CA 91203
Nurse Practitioner (Psychiatric/Mental Health)
450 N BRAND BLVD STE 600
GLENDALE, CA 91203
Behavior Analyst
450 N BRAND BLVD STE 600
GLENDALE, CA 91203

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1104977248, enumerated as an "individual" on January 16, 2007.

The provider is located at 450 N BRAND BLVD STE 600 GLENDALE, CA 91203 and the phone number is (818) 369-1170.

Internal Medicine with taxonomy code 207RE0101X and a focus in Endocrinology, Diabetes & Metabolism.