Doctor profile · Federal record
Dr. Ramon Guadiz, M.D.
Nephrology Physician (CMS: Neurology) · Lynwood, CA
- NPI 1003998147
- Accepts Medicare
- 39 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3625 Martin Luther King JR Blvd, Suite 2
Lynwood, CA 902623509
(310) 638-0533
fax (310) 638-9171
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- December 20, 2012
- Year of graduation
- 1987 — 39 yrs since
- Specialty taxonomy
- 207RN0300X — NUCC code
- State license (1)
- California #A72478
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1003998147. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
799
Distinct HCPCS
10
Medicare allowed
$154,292
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90960 |
Dialysis services, 4 or more physician visits per month (20 years or older) | 200 | 41 | $374 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 137 | 51 | $69 | |
90961 |
Dialysis services, 2-3 physician visits per month (20 years or older) | 134 | 40 | $311 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 113 | 43 | $52 | |
90935 |
Hemodialysis procedure with physician evaluation | 104 | 41 | $75 | |
90962 |
Dialysis services, 1 physician visit per month (20 years or older) | 36 | 21 | $216 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 30 | 11 | $69 | |
99221 |
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | 21 | 20 | $87 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 13 | 13 | $122 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 11 | 11 | $137 |
In context: peer comparison
Among 5 peers in this city , average services per provider: 92. This provider delivers 8.7× the peer median.Open Payments
Industry payments received
All-time total
$109
Transactions
5
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Pharmaceuticals LP | 4 | $94.82 | |
| Ardelyx, Inc. | 1 | $13.96 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,033
Patients
312
Total drug cost
$196,244
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Losartan Potassium | Generic | 165 | 54 | $3,141 |
| Farxiga (Dapagliflozin Propanediol) | Brand | 144 | 44 | $147,006 |
| Tamsulosin Hcl | Generic | 138 | 48 | $5,474 |
| Furosemide | Generic | 131 | 52 | $1,494 |
| Nifedipine Er (Nifedipine) | Brand | 92 | 29 | $8,917 |
| Amlodipine Besylate | Generic | 59 | 25 | $962 |
| Sevelamer Carbonate | Generic | 47 | 15 | $15,688 |
| Lisinopril | Generic | 39 | 0 | $298 |
| Calcium Acetate | Generic | 36 | 12 | $4,807 |
| Prosol (Parenteral Amino Acid 20% No.1) | Brand | 36 | 0 | $4,734 |
Hospital affiliations
Frequently asked questions
What is Dr. Ramon Guadiz's medical specialty?
Dr. Ramon Guadiz practices Nephrology Physician in Lynwood, CA.
Where does Dr. Ramon Guadiz practice?
Dr. Ramon Guadiz practices at 3625 Martin Luther King JR Blvd, Lynwood, CA 902623509. Office phone: 3106380533.
What is Dr. Ramon Guadiz's NPI?
Dr. Ramon Guadiz's National Provider Identifier (NPI) is 1003998147, issued by NPPES.
Does Dr. Ramon Guadiz accept Medicare assignment?
Yes. Dr. Ramon Guadiz accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ramon Guadiz commonly perform?
Top Medicare-reported procedures in 2023: Dialysis services, 4 or more physician visits per month (20 years or older) (HCPCS 90960); Established patient office or other outpatient visit (HCPCS 99213); Dialysis services, 2-3 physician visits per month (20 years or older) (HCPCS 90961). Source: CMS Medicare Physician & Other Practitioners file.