DR. SONJA BLUM MD, PHD
NPI 1003073636
Psychiatry & Neurology - Behavioral Neurology & Neuropsychiatry in New York, NY
About Dr. Sonja Blum Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SONJA BLUM MD, PHD (NPI 1003073636) is an individual behavioral neurology & neuropsychiatry provider in New York, New York, licensed in New York (248370) and active in the NPI registry since May 2008. She is enrolled in Medicare PECOS, is affiliated with New York-presbyterian Hospital, and is a graduate of University Of Texas Medical School At Houston (2006).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Sonja Blum Md, Phd is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
8Medicare enrollment records show Sonja Blum reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10021
- Reassigned Medicare billing, New York enrollment
- 112 clinicians in this Medicare group
Juneau, WI 53039
- Reassigned Medicare billing, Wisconsin enrollment
- 1,447 clinicians in this Medicare group
Plover, WI 54467
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1952890873 (Wisconsin)
- 2,476 clinicians in this Medicare group
Marshfield, WI 54449
- Reassigned Medicare billing, Wisconsin enrollment
- 2,540 clinicians in this Medicare group
Neillsville, WI 54456
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1346239373 (Wisconsin)
- 1,283 clinicians in this Medicare group
Park Falls, WI 54552
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1700963048 (Wisconsin)
- 1,351 clinicians in this Medicare group
Chetek, WI 54728
- Reassigned Medicare billing, Wisconsin enrollment
- 1,616 clinicians in this Medicare group
Boynton Beach, FL 33426
- Reassigned Medicare billing, New York enrollment
- 7,712 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.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
New York-Presbyterian Hospital
Acute Care Hospitals · New York, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10021 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 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW YORK, NY 10021
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 Sonja Blum's NPI number?
The NPI number for Sonja Blum is 1003073636. It was assigned to this individual provider in the NPPES registry on May 21, 2008.
Where is Sonja Blum located?
Sonja Blum practices at 428 E 72nd St Ofc 500, New York, NY 10021. The listed phone number is (212) 746-2441.
What is Sonja Blum's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Behavioral Neurology & Neuropsychiatry, with taxonomy code 2084B0040X.
Is Sonja Blum enrolled in Medicare?
Yes. Sonja Blum is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Sonja Blum's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sonja Blum reassigns Medicare benefits to 8 organizations: Weill Medical College Of Cornell (New York, NY), Beaver Dam Community Hospitals Inc (Juneau, WI), Mchs Hospitals, Inc. (Plover, WI), Marshfield Clinic Inc (Marshfield, WI), Memorial Hospital, Inc (Neillsville, WI) and 3 more organizations, 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 Sonja Blum's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Sonja Blum affiliated with any hospitals?
According to CMS data, Sonja Blum is affiliated with New York-Presbyterian Hospital.
When was this NPI record last updated?
The NPPES record for Sonja Blum was last updated on April 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Dr. Sonja Blum, MD, PHD · NPI 1003073636
Behavioral Neurology & Neuropsychiatry physician in New York, New York. Individual provider, active in the CMS NPPES registry since May 21, 2008.
## Identity
- **NPI:** 1003073636 (Entity type: Individual)
- **Enumerated:** May 21, 2008
- **Primary specialty:** Psychiatry & Neurology - Behavioral Neurology & Neuropsychiatry · taxonomy 2084B0040X
- **State license:** 248370 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 428 E 72ND ST OFC 500, New York, NY 10021-0600
- **Phone:** (212) 746-2441
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 8 organizations under Medicare reassignment (form CMS-855R): Weill Medical College Of Cornell (NPI 1073827309, New York, NY); Beaver Dam Community Hospitals Inc (NPI 1831410521, Juneau, WI); Mchs Hospitals, Inc. (NPI 1386249894, Plover, WI); Marshfield Clinic Inc (NPI 1952347981, Marshfield, WI); Memorial Hospital, Inc (NPI 1679746747, Neillsville, WI); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Texas Medical School At Houston, class of 2006
## Record status
- **NPPES last updated:** April 30, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1003073636) · Data from the CMS NPPES public registry.