Hajerah Sonnabend
NPI 1912369570 · Endocrinology, Diabetes & Metabolism Physician · Battle Creek, MI
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hajerah Sonnabend is a Endocrinology, Diabetes & Metabolism Physician provider in Battle Creek, MI (NPI 1912369570).
Provider details
- NPI number
- 1912369570
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- 125.069192 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
133 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 82 | $95 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 29 | $130 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 22 | $34 |
Typical Medicare-allowed amounts for these services range $34–$130 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 58 | 27 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 47 | 19 |
| Dulaglutidebrand: Trulicity | 35 | 12 |
| Metformin Hcl | 33 | 15 |
| Insulin Aspartbrand: Novolog Flexpen | 29 | — |
| Pen Needle, Diabeticbrand: Nano 2nd Gen Pen Needle | 29 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$280 across 11 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 600 S Paulina St Ste 403Chicago, IL 60612-3806Phone: (312) 942-5495
- 9977 Woods Dr Ste 300Skokie, IL 60077-1057Phone: (847) 663-8540
Registry dates
- Enumerated
- 2016-03-23
- Last updated
- 2023-08-10
- Certified
- 2023-08-10
Frequently asked questions
- What is Hajerah Sonnabend's NPI number?
- Hajerah Sonnabend's National Provider Identifier (NPI) is 1912369570, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hajerah Sonnabend's specialty?
- Hajerah Sonnabend is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Hajerah Sonnabend located?
- Hajerah Sonnabend's practice location on file with NPPES is 363 Fremont St Ste 307, Battle Creek, MI 49017-3391.
- What is Hajerah Sonnabend's phone number?
- The practice phone number listed in the NPPES registry for Hajerah Sonnabend is (269) 245-8190.
- Does Hajerah Sonnabend accept Medicare?
- Hajerah Sonnabend is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hajerah Sonnabend's NPI active?
- Yes — Hajerah Sonnabend's NPI (1912369570) is active in the NPPES registry as of the last update on 2023-08-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.