MS. HUMMA ISHAQ TIWANA M.D.
NPI 1235370024
Obstetrics & Gynecology in Baltimore, MD
About Ms. Humma Ishaq Tiwana M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. HUMMA ISHAQ TIWANA M.D. (NPI 1235370024) is an individual obstetrics & gynecology provider in Baltimore, Maryland, licensed in Maryland (D0068575) and active in the NPI registry since March 2009. She is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Howard County Medical Center, and maintains a secondary practice location in Salisbury.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ms. Humma Ishaq Tiwana M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
6Medicare enrollment records show Humma Tiwana reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baltimore, MD 21287
- Reassigned Medicare billing, Maryland enrollment
- 4,483 clinicians in this Medicare group
Baltimore, MD 21239
- Reassigned Medicare billing, Maryland enrollment
- 2,602 clinicians in this Medicare group
Salisbury, MD 21801
- Reassigned Medicare billing, Maryland enrollment
- 27 clinicians in this Medicare group
Salisbury, MD 21801
- Reassigned Medicare billing, Maryland enrollment
- 531 clinicians in this Medicare group
Princess Anne, MD 21853
- Reassigned Medicare billing, Maryland enrollment
- 121 clinicians in this Medicare group
Louisville, KY 40241
- Reassigned Medicare billing, Kentucky enrollment
- 1,896 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Johns Hopkins Howard County Medical Center
Acute Care Hospitals · Columbia, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21225 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BALTIMORE, MD 21225
BALTIMORE, MD 21225
BALTIMORE, MD 21225
BALTIMORE, MD 21225
BALTIMORE, MD 21225
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Humma Tiwana's NPI number?
The NPI number for Humma Tiwana is 1235370024. It was assigned to this individual provider in the NPPES registry on March 9, 2009.
Where is Humma Tiwana located?
Humma Tiwana practices at 3001 S Hanover St Gruehn Bldg., Suite 301, Baltimore, MD 21225. The listed phone number is (410) 354-0800.
What is Humma Tiwana's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Humma Tiwana enrolled in Medicare?
Yes. Humma Tiwana is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Humma Tiwana's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Humma Tiwana reassigns Medicare benefits to 6 organizations: Johns Hopkins University (Baltimore, MD), Medstar Medical Group II LLC (Baltimore, MD), Dhp Of Pennsylvania PC (Salisbury, MD), Tidalhealth Specialty Care, LLC (Salisbury, MD), Three Lower Counties Community Services, Inc. (Princess Anne, MD) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Humma Tiwana's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Humma Tiwana accept?
Health plans from Anthem Blue Cross and Blue Shield and CareSource list Humma Tiwana as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Humma Tiwana affiliated with any hospitals?
According to CMS data, Humma Tiwana is affiliated with Johns Hopkins Howard County Medical Center.
When was this NPI record last updated?
The NPPES record for Humma Tiwana was last updated on March 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Ms. Humma Ishaq Tiwana, M.D. · NPI 1235370024
Obstetrics & Gynecology physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since March 9, 2009.
## Identity
- **NPI:** 1235370024 (Entity type: Individual)
- **Enumerated:** March 9, 2009
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** D0068575 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 3001 S HANOVER ST, GRUEHN BLDG., SUITE 301, Baltimore, MD 21225-1233
- **Phone:** (410) 354-0800 · **Fax:** (410) 354-0847
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Johns Hopkins University (NPI 1295731966, Baltimore, MD); Medstar Medical Group II LLC (NPI 1184046187, Baltimore, MD); Dhp Of Pennsylvania PC (NPI 1427313717, Salisbury, MD); Tidalhealth Specialty Care, LLC (NPI 1619504735, Salisbury, MD); Three Lower Counties Community Services, Inc. (NPI 1154354744, Princess Anne, MD); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1998
## Record status
- **NPPES last updated:** March 4, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1235370024) · Data from the CMS NPPES public registry.