KALPANA NATRAJAN M.D.
NPI 1770686834
Internal Medicine - Infectious Disease in San Diego, CA

Q: What is Kalpana Natrajan's NPI number?

The NPI number for Kalpana Natrajan is 1770686834. It was assigned to this individual provider in the NPPES registry on September 6, 2006.

Q: What is Kalpana Natrajan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Q: When was this NPI record last updated?

The NPPES record for Kalpana Natrajan was last updated on December 3, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.

Active since September 06, 2006PECOS EnrolledAccepts Medicare Assignment

555 WASHINGTON ST, SAN DIEGO, CA 92103(619) 260-8300(619) 260-1268 Get Directions Write a Review

NPPES record last updated: December 3, 2018. Verified against the NPPES registry weekly; last sync: November 08, 2026.

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About Kalpana Natrajan M.d. NPPES

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

KALPANA NATRAJAN M.D. (NPI 1770686834) is an individual infectious disease provider in San Diego, California, licensed in California (A90413) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS and is a graduate of Hahnemann University College Of Medicine (1998).

NPPES Registry Identity

NPI1770686834

Entity TypeIndividualFemale

Primary Taxonomy207RI0200X

Provider Legal NameKALPANA NATRAJANCredential: M.D.

Location Address555 WASHINGTON STSan Diego, CA 92103-2289

Mailing Address325 W Washington St Ste 2329San Diego, CA 92103-1946 · (619) 884-5499 · Fax (619) 785-3296

Phone(619) 260-8300

Fax(619) 260-1268

Sole ProprietorNo

Medical School CMSHahnemann University College Of MedicineGraduated 1998

Enumeration DateSeptember 6, 2006

Last NPPES UpdateDecember 3, 2018

✔ NPI 1770686834 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RI0200X

License✔ Licensed in CA · A90413

Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

555 WASHINGTON ST, San Diego, CA 92103

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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

Kalpana Natrajan M.d. 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 ID7113944455

PECOS Enrollment IDI20051026000978

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 Reassignments

Medicare enrollment records show Kalpana Natrajan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Kalpana Natrajan MD Inc

Same address

Infectious Disease

555 WASHINGTON ST
San Diego, CA 92103

Reassigned Medicare billing, California enrollment

NPI 1477741171 (619) 260-8300

Scripps Health

Same address

Family Medicine

501 WASHINGTON ST, SUITE 525/600
San Diego, CA 92103

Reassigned Medicare billing, California enrollment
1,598 clinicians in this Medicare group

NPI 1881636108 (619) 278-3301

Emergency And Acute Care Medical Corporation

3.5 mi

Emergency Medicine

7901 FROST ST
San Diego, CA 92123

Reassigned Medicare billing, California enrollment
1,437 clinicians in this Medicare group

NPI 1437103942 (858) 939-3400

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 3

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.

1,904 services85 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

1,002 services82 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.

74 services71 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92103 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

$140.22 typical visit price

range $62.10 – $184.71

Typical copayment $35.05 (range $15.52 – $46.17)

Most-billed visit code 99204

Established Patient

$108.42 typical visit price

range $20.62 – $151.42

Typical copayment $27.10 (range $5.15 – $37.85)

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.

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.

HUI ZHAO

Technician

555 WASHINGTON ST
SAN DIEGO, CA 92103

San Diego County (619) 260-8300

DR. BINA SOLANKY NP-C

Nurse Practitioner

555 WASHINGTON ST
SAN DIEGO, CA 92103

San Diego County (619) 260-8300

ALEXIA PEREZ

Registered Nurse

555 WASHINGTON ST
SAN DIEGO, CA 92103

San Diego County (619) 260-8300

CAMILA NADALET RDN

Dietitian, Registered

555 WASHINGTON ST
SAN DIEGO, CA 92103

San Diego County (619) 686-4682

JACLYN SARAH FIERRO

Respiratory Therapist, Registered

555 WASHINGTON ST
SAN DIEGO, CA 92103

San Diego County (619) 260-8300

TRUC THUY PHAM

Nurse Practitioner

555 WASHINGTON ST
SAN DIEGO, CA 92103

San Diego County (619) 260-8300

ADVANCED SLEEP MEDICINE SERVICES, INC.

Clinic/Center (Sleep Disorder Diagnostic)

555 WASHINGTON ST, SUITE 1037
SAN DIEGO, CA 92103

San Diego County (310) 479-0500

MOLLY E RUANO PT, DPT

Physical Therapist

555 WASHINGTON ST
SAN DIEGO, CA 92103

San Diego County (619) 260-8300

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 Kalpana Natrajan's NPI number?

The NPI number for Kalpana Natrajan is 1770686834. It was assigned to this individual provider in the NPPES registry on September 6, 2006.

Where is Kalpana Natrajan located?

Kalpana Natrajan practices at 555 Washington St, San Diego, CA 92103. The listed phone number is (619) 260-8300.

What is Kalpana Natrajan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Kalpana Natrajan enrolled in Medicare?

Yes. Kalpana Natrajan 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 Kalpana Natrajan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kalpana Natrajan reassigns Medicare benefits to 3 organizations: Kalpana Natrajan MD Inc (San Diego, CA), Scripps Health (San Diego, CA) and Emergency And Acute Care Medical Corporation (San Diego, CA). 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 Kalpana Natrajan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Kalpana Natrajan was last updated on December 3, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.