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DR. HARNATH SINGH M.D.
NPI 1538133236
Internal Medicine - Nephrology in Flagstaff, AZ

Active since February 17, 2006PECOS Enrolled
2201 N VICKEY ST STE 110, FLAGSTAFF, AZ 86004(928) 213-9460(928) 213-9465 Get Directions Write a Review

NPPES record last updated: October 29, 2019. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 29, 2019, Feb 10, 2016 (2 updates tracked since 2016).

About Dr. Harnath Singh M.d. NPPES

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

DR. HARNATH SINGH M.D. (NPI 1538133236) is an individual nephrology provider in Flagstaff, Arizona, licensed in Arizona (26055) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1538133236
Entity TypeIndividualMale
Primary Taxonomy207RN0300X
Provider Legal NameDR. HARNATH SINGHCredential: M.D.
Location Address2201 N VICKEY ST STE 110Flagstaff, AZ 86004-6126
Mailing Address3333 E Camelback Rd, Ste 180Phoenix, AZ 85018-2322 · (602) 997-0484 · Fax (602) 224-3315
Phone(928) 213-9460
Fax(928) 213-9465
Sole ProprietorNo
Enumeration DateFebruary 17, 2006
Last NPPES UpdateOctober 29, 20192 updates tracked since enumeration
✔ NPI 1538133236 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License✔ Licensed in AZ · 26055
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
2201 N VICKEY ST STE 110, Flagstaff, AZ 86004
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Other Identifiers 1

Medicaid405953AZ

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of Arizona, Imperial Insurance Companies, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Harnath Singh M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Harnath Singh reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Akdhc, LLC
2.1 mi
Nephrology
77 W FOREST AVE, STE 302, AKDHC, LLC
Flagstaff, AZ 86001
  • Reassigned Medicare billing, Arizona enrollment
  • 155 clinicians in this Medicare group
NPI 1962737890 (928) 213-9460

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 10

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 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.
623 services120 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
119 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.
93 services82 patients
Dialysis services, 4 or more physician visits per month (20 years or older) 90960
Dialysis is a treatment that filters and purifies your blood using a machine. It helps keep your fluids and electrolytes in balance when the kidneys can't do their job. This service includes 4 or more visits per month with a physician to monitor your health and adjust your treatment as needed.
84 services21 patients
Dialysis services, 2-3 physician visits per month (20 years or older) 90961
Dialysis is a treatment that performs the function of healthy kidneys if they're not working properly. It removes waste and excess fluid from your blood. 2-3 physician visits per month are recommended for monitoring your health and adjusting your treatment as needed. This service is available for those aged 20 years and older.
68 services23 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
44 services37 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 86004 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
$127.71 typical visit price
range $55.44 – $168.60
Typical copayment $31.92 (range $13.86 – $42.15)
Most-billed visit code 99204
Established Patient
$98.00 typical visit price
range $17.72 – $137.41
Typical copayment $24.50 (range $4.43 – $34.35)
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 5

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

Tacrolimus, immediate release, oral, 1 mg J7507
Treatment-Treatment - Miscellaneous · category RX029N
8 suppliers71 claims8,924 services$0.30 avg. paid by Medicare
Prednisone, immediate release or delayed release, oral, 1 mg J7512
Treatment-Treatment - Miscellaneous · category RX029N
2 suppliers16 claims2,271 services$0.01 avg. paid by Medicare
Mycophenolate mofetil, oral, 250 mg J7517
Treatment-Treatment - Miscellaneous · category RX029N
7 suppliers45 claims7,800 services$0.18 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
9 suppliers62 claims62 services$18.04 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512
Treatment-Chemotherapy · category RH012N
8 suppliers73 claims75 services$12.13 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. MATTHEW IAN GEMBALA M.D., M.P.H.
Internal Medicine (Nephrology)
2201 N VICKEY ST STE 110
FLAGSTAFF, AZ 86004
Coconino County (928) 213-9460
ANG CHEN M.D.
Internal Medicine (Nephrology)
2201 N VICKEY ST STE 110
FLAGSTAFF, AZ 86004
Coconino County (928) 213-9460
JESSIE STRENGTH GOULD ACNPC-AG
Nurse Practitioner (Acute Care)
2201 N VICKEY ST STE 110
FLAGSTAFF, AZ 86004
Coconino County (928) 213-9460
AKDHC, LLC
Internal Medicine (Nephrology)
2201 N VICKEY ST STE 110
FLAGSTAFF, AZ 86004
Coconino County (928) 213-9460

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 Harnath Singh's NPI number?

The NPI number for Harnath Singh is 1538133236. It was assigned to this individual provider in the NPPES registry on February 17, 2006.

Where is Harnath Singh located?

Harnath Singh practices at 2201 N Vickey St Ste 110, Flagstaff, AZ 86004. The listed phone number is (928) 213-9460.

What is Harnath Singh's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Harnath Singh enrolled in Medicare?

Yes. Harnath Singh is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Harnath Singh's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Harnath Singh reassigns Medicare benefits to Akdhc, LLC (Flagstaff, AZ). 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 Harnath Singh's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Harnath Singh accept?

Health plans from Blue Cross Blue Shield of Arizona and Imperial Insurance Companies, Inc. list Harnath Singh 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.

When was this NPI record last updated?

The NPPES record for Harnath Singh was last updated on October 29, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.