MARK WILLIAM HUMPHREY SR.
NPI 1770116873
Case Manager/Care Coordinator in Washington, DC
NPI Status: Active since February 17, 2020
- Individual
- Male
- Case Manager/Care Coordinator
About MARK HUMPHREY
This page provides the complete NPI Profile along with additional information for Mark Humphrey, a provider established in Washington, District Of Columbia with a medical specialization in Case Manager/care Coordinator. The healthcare provider is registered in the NPI registry with number 1770116873 assigned on February 2020. The practitioner's primary taxonomy code is 171M00000X. The provider is registered as an individual and his NPI record was last updated June 2025.
- NPI
- 1770116873
- Provider Name
- MARK WILLIAM HUMPHREY SR.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 35 K ST NE WASHINGTON, DC 20002
- Location Phone
- (202) 839-3500
- Mailing Address
- 1009 ATLEE DR LANDOVER, MD 20785
- Mailing Phone
- (240) 330-0786
- Is Sole Proprietor?
- No
- Enumeration Date
- 02-17-2020
- Last Update Date
- 06-02-2025
- Code Navigator
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
Case Manager/Care Coordinator
- Taxonomy Code
- 171M00000X
- Type
- Other Service Providers
- Taxonomy Description
- A person who provides case management services and assists an individual in gaining access to needed medical, social, educational, and/or other services. The person has the ability to provide an assessment and review of completed plan of care on a periodic basis. This person is also able to take collaborative action to coordinate the services with other providers and monitor the enrollee's progress toward the cost-effective achievement of objectives specified in the plan of care. Credentials may vary from an experience in the fields of psychology, social work, rehabilitation, nursing or a closely related human service field, to a related Assoc of Arts Degree or to nursing credentials. Some states may require certification in case management.
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) |
|---|---|---|---|---|
| 1 | 374U00000X | Nursing Service Related Providers | Home Health Aide |
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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. | |||||||||
| 1 | 7 | 7 | 0 | 1 | 1 | 6 | 8 | 7 | 3 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 7 | 14 | 0 | 2 | 1 | 12 | 8 | 14 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 7 + 1 + 4 + 0 + 2 + 1 + 1 + 2 + 8 + 1 + 4 + 24 = 57 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 60 - 57 = 3 | 3 | ||||||||
The NPI number 1770116873 is valid because the calculated check digit 3 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 |
|---|---|---|---|
| 1710924154 | MS. ANA MARIA ALONSO LICSW Individual | Social Worker (Clinical) | 35 K ST NE 2ND FLOOR WASHINGTON, DC 20002 (202) 442-4872 |
| 1669506218 | MELODY V JACKSON PHD Individual | Counselor | 35 K ST NE WASHINGTON, DC 20002 (202) 442-4108 |
| 1063616597 | DR. EMMA DACQUEL MD Individual | Counselor (Mental Health) | 35 K ST NE WASHINGTON, DC 20002 (202) 442-4107 |
| 1790964948 | YVONNE LEONOR BASCUG M.D. Individual | Psychiatry & Neurology (Psychiatry) | 35 K ST NE WASHINGTON, DC 20002 (202) 442-4872 |
| 1740463785 | ANN M LUX M.D. Individual | Psychiatry & Neurology (Psychiatry) | 35 K ST NE WASHINGTON, DC 20002 (202) 442-4182 |
| 1730347170 | DR. ROBERT LEE SHERRON M.D. Individual | Psychiatry & Neurology (Psychiatry) | 35 K ST NE WASHINGTON, DC 20002 (202) 442-4849 |
| 1598920514 | ROSETTA DABNEY LICSW Individual | Social Worker (Clinical) | 35 K ST NE ROOM 315 WASHINGTON, DC 20002 (202) 442-4193 |
| 1114183506 | MS. MAXINE K. GREEN R.N.C Individual | Registered Nurse (Case Management) | 35 K ST NE WASHINGTON, DC 20002 (202) 442-4142 |
| 1881850287 | DR. ALLEN LAWRENCE ZEMON PH.D. Individual | Psychologist (Clinical) | 35 K ST NE WASHINGTON, DC 20002 (202) 442-4878 |
| 1407002454 | MR. PATRICK B AWOSIKA LPC Individual | Counselor (Professional) | 35 K ST NE WASHINGTON, DC 20002 (202) 442-4105 |
| 1124274170 | DEBORAH RENEE' EVANS LPC Individual | Counselor (Professional) | 35 K ST NE WASHINGTON, DC 20002 (202) 442-4140 |
| 1588810162 | IGOR VOLKOV M.D. Individual | Psychiatry & Neurology (Psychiatry) | 35 K ST NE WASHINGTON, DC 20002 (202) 442-4100 |
| 1306092978 | BETTY A EHIKHAMENOR RN Individual | Registered Nurse | 35 K ST NE WASHINGTON, DC 20002 (202) 442-4135 |
| 1245486752 | MR. ANTHONY CHINAKA OKEH MD ,DC Individual | Registered Nurse (Case Management) | 35 K ST NE WASHINGTON, DC 20002 (202) 442-4891 |
| 1124274428 | CYNTHIA E. EDWARDS RN Individual | Registered Nurse | 35 K ST NE WASHINGTON, DC 20002 (202) 442-4915 |
| 1851548929 | MRS. NGOZI M NDUBUIZU RN,C Individual | Registered Nurse (Psychiatric/Mental Health, Adult) | 35 K ST NE RM 210 WASHINGTON, DC 20002 (202) 442-4852 |
| 1053560201 | MR. SOLOMON P LINDSEY LPC Individual | Counselor (Professional) | 35 K ST NE WASHINGTON, DC 20002 (202) 442-4147 |
| 1316196611 | JOANNE P. PERONNEAUX LPC Individual | Counselor (Professional) | 35 K ST NE WASHINGTON, DC 20002 (202) 244-2414 |
| 1588980833 | MADELEINE DAVIS-SHELTON LICSW, LMFT Individual | Social Worker (Clinical) | 35 K ST NE #221 WASHINGTON, DC 20002 (202) 559-5119 |
| 1073839205 | OLATUNDE OGUNYEMI Individual | Social Worker (Clinical) | 35 K ST NE WASHINGTON, DC 20002 (202) 442-4202 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1770116873, enumerated in the NPI registry as an "individual" on February 17, 2020
The provider is located at 35 K St Ne Washington, Dc 20002 and the phone number is (202) 839-3500
The provider's speciality is Case Manager/Care Coordinator with taxonomy code 171M00000X
This NPI record was last updated on February 17, 2020. 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].
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