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DR. ALFONSO A BLUM M.
NPI 1790810448
Internal Medicine in East Chicago, IN

Active since February 22, 2007PECOS EnrolledAccepts Medicare Assignment
4035 ELM STREET, EAST CHICAGO, IN 46312(219) 398-9840(219) 398-9845 Get Directions Write a Review

NPPES record last updated: July 13, 2010. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Alfonso A Blum M. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ALFONSO A BLUM M. (NPI 1790810448) is an individual internal medicine provider in East Chicago, Indiana, licensed in Indiana (01062815A) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS, is affiliated with St Catherine Hospital Inc, and is a graduate of Other (1996).

NPPES Registry Identity

NPI1790810448
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. ALFONSO A BLUMCredential: M.
Location Address4035 ELM STREETEast Chicago, IN 46312-3042
Mailing Address9660 Wicker AvenueSt John, IN 46373-9487 · (219) 226-2203 · Fax (219) 226-2202
Phone(219) 398-9840
Fax(219) 398-9845
Sole ProprietorNo
Medical School CMSOtherGraduated 1996
Enumeration DateFebruary 22, 2007
Last NPPES UpdateJuly 13, 2010
✔ NPI 1790810448 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IN · 01062815A
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
4035 ELM STREET, East Chicago, IN 46312
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Other Identifiers 1

Other01062815AIN · Physician License

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

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. Alfonso A Blum M. 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.

PECOS PAC ID8921196452
PECOS Enrollment IDI20071117000070
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Alfonso Blum reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

219 Health Network Inc
1.5 mi
Family Medicine
100 W CHICAGO AVE STE F
East Chicago, IN 46312
  • Reassigned Medicare billing, Indiana enrollment
  • 92 clinicians in this Medicare group
NPI 1093213506 (219) 392-7016

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 6

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
309 services90 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
100 services74 patients
Hemoglobin a1c level 83036
Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.
56 services43 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
24 services19 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
18 services17 patients
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221
Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.
14 services14 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

St Catherine Hospital Inc

Acute Care Hospitals · East Chicago, IN
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number150008
Location4321 Fir StreetEast Chicago, IN 46312 · Lake County
Emergency services Birthing friendly

Community Hospital

Acute Care Hospitals · Munster, IN
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number150125
Location901 Macarthur BlvdMunster, IN 46321 · Lake County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 46312 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$122.49 typical visit price
range $53.07 – $161.76
Typical copayment $30.62 (range $13.26 – $40.44)
Most-billed visit code 99204
Established Patient
$94.22 typical visit price
range $16.93 – $132.22
Typical copayment $23.55 (range $4.23 – $33.05)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 4

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
15 suppliers61 claims214 services$6.10 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
8 suppliers32 claims62 services$1.15 avg. paid by Medicare
Enteral formula, nutritionally complete, calorically dense (equal to or greater than 1.5 kcal/ml) with intact nutrients, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4152
Other-Enteral and Parenteral · category OB006N
1 supplier11 claims5,188 services$0.26 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
2 suppliers14 claims14 services$184.33 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Alfonso Blum's NPI number?

The NPI number for Alfonso Blum is 1790810448. It was assigned to this individual provider in the NPPES registry on February 22, 2007.

Where is Alfonso Blum located?

Alfonso Blum practices at 4035 Elm Street, East Chicago, IN 46312. The listed phone number is (219) 398-9840.

What is Alfonso Blum's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Alfonso Blum enrolled in Medicare?

Yes. Alfonso 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 organization bills Medicare for Alfonso Blum's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alfonso Blum reassigns Medicare benefits to 219 Health Network Inc (East Chicago, IN). The 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 Alfonso Blum's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Alfonso Blum accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource list Alfonso Blum 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 Alfonso Blum affiliated with any hospitals?

According to CMS data, Alfonso Blum is affiliated with St Catherine Hospital Inc and Community Hospital.

When was this NPI record last updated?

The NPPES record for Alfonso Blum was last updated on July 13, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years 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.