DR. CHARLES MICHAEL CITRENBAUM PH.D.
NPI 1639297682
Psychologist - Health Service in Baltimore, MD

NPI Status: Active since March 27, 2007

Contact Information

2 HAMILL RD.
SUITE 322
BALTIMORE, MD
ZIP 21210
Phone: (410) 433-6555
Fax: (410) 433-6565

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  • Individual
  • Male
  • Years of Experience 51
  • Psychologist
  • Health Service
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About CHARLES CITRENBAUM

This page provides the complete NPI Profile along with additional information for Charles Citrenbaum, a provider established in Baltimore, Maryland with a medical specialization in Psychologist, focusing in health service and more than 51 years of experience. The healthcare provider is registered in the NPI registry with number 1639297682 assigned on March 2007. The practitioner's primary taxonomy code is 103TH0100X with license number 897 (MD). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1639297682
Provider Name
DR. CHARLES MICHAEL CITRENBAUM PH.D.
Gender
Male
Entity Type
Individual
Location Address
2 HAMILL RD. SUITE 322 BALTIMORE, MD 21210
Location Phone
(410) 433-6555
Location Fax
(410) 433-6565
Mailing Address
2 HAMILL RD. SUITE 322 BALTIMORE, MD 21210
Mailing Phone
(410) 433-6555
Mailing Fax
(410) 433-6565
Medical School Name
OTHER
Graduation Year
1975
Is Sole Proprietor?
Yes
Enumeration Date
03-27-2007
Last Update Date
09-11-2025
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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

Psychologist Health Service

Taxonomy Code
103TH0100X
Type
Behavioral Health & Social Service Providers
License No.
897
License State
MD
Taxonomy Description
A psychologist, certified/licensed at the independent practice level in his/her state, who is duly trained and experienced in the delivery of direct, preventative, assessment, and therapeutic intervention services to individuals whose growth, adjustment, or functioning is actually impaired or is demonstrably at high risk of impairment (1974).

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)
1103T00000XBehavioral Health & Social Service Providers

Psychologist

897 (MD)
2103TA0400XBehavioral Health & Social Service Providers

Psychologist
Addiction (Substance Use Disorder)

897 (MD)
3103TC0700XBehavioral Health & Social Service Providers

Psychologist
Clinical

897 (MD)
4103TC2200XBehavioral Health & Social Service Providers

Psychologist
Clinical Child & Adolescent

897 (MD)
5103TE1100XBehavioral Health & Social Service Providers

Psychologist
Exercise & Sports

897 (MD)
6103TF0000XBehavioral Health & Social Service Providers

Psychologist
Family

897 (MD)
7103TF0200XBehavioral Health & Social Service Providers

Psychologist
Forensic

897 (MD)

Medicare Participation & PECOS Enrollment Status

Charles Citrenbaum 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.

Charles Citrenbaum 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 and Durable Medical Equipment (DME).

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: 6901962687

    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: I20090304000490

    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): No

  • Eligible to Order or Refer Power Mobility Devices: No

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.

Psychotherapy, 1 hour

Psychotherapy is a therapeutic interaction or treatment between a trained professional and a patient. In a 1-hour session, you'll talk about your feelings, thoughts, and behaviors to help identify and manage mental health issues. This process aids in personal growth, healing, and improved well-being.

This service was performed 172 times for 20 patients

Psychotherapy, 30 minutes

Psychotherapy is a therapeutic interaction or treatment between a trained professional and a patient. In a 30-minute session, the therapist helps you explore feelings, thoughts, and behaviors to better understand yourself and manage life's challenges.

This service was performed 91 times for 14 patients

Psychotherapy, 45 minutes

Psychotherapy is a treatment method where you converse with a therapist about your thoughts, feelings, and behaviors. In a 45-minute session, the therapist assists you in understanding and managing your mental health concerns, improving emotional wellness, and promoting personal growth.

This service was performed 85 times for 13 patients

Reviews for DR. CHARLES MICHAEL CITRENBAUM PH.D.

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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 1639297682, we treat the final digit (2) 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 78. The final step is to find the difference between that total and the next multiple of ten (80 - 78 = 2).

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
6
Unchanged
Pos 3
3
Doubled → 6
Pos 4
9
Unchanged
Pos 5
2
Doubled → 4
Pos 6
9
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
6
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
2
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 7 → 14 → 5 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 6 + 9 + 4 + 9 + 1 + 4 + 6 + 1 + 6 + 24 = 78

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

The next multiple of ten after 78 is 80. The difference is the calculated check digit.

80 - 78 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1639297682.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1639297682, enumerated as an "individual" on March 27, 2007.

The provider is located at 2 HAMILL RD. SUITE 322 BALTIMORE, MD 21210 and the phone number is (410) 433-6555.

Psychologist with taxonomy code 103TH0100X and a focus in Health Service.