2026 NPPES data Nephrology Physician NPI 1144223397 M.D.
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STELLA FELD, M.D.

Nephrology Physician in INGLEWOOD, California. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
3K
Medicare Part D claims · 152 beneficiaries · Nephrology Physician avg: 1K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: STELLA FELD, M.D. is a Nephrology Physician ([object Object]) practicing in INGLEWOOD, California with a Medicare Part D prescribing footprint of 3K claims across 152 beneficiaries — 13% brand-name prescribing .

What stands out: STELLA FELD, M.D. filed 2,680 Medicare Part D claims in 2023 across INGLEWOOD, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

STELLA FELD, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

STELLA FELD, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 05/23/2005

NPI 1144223397

Primary specialty

Nephrology Physician

Mid-sized

10,534 US NPIs in this specialty

Medicare Part D claims

2,680 84% vs specialty avg

2023 prescription claims

Specialty avg: 1,454

Specialty distribution in California

How Nephrology Physician compares to other specialties among California providers

California providers

Nephrology Physician share within California

1. Nephrology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Nephrology Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Nephrology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Nephrology Physician ABMS/AOA estimate

Est. board-certified rate (Nephrology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Nephrology Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

STELLA FELD, M.D. is a Nephrology Physician provider practicing in INGLEWOOD, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1144223397. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

STELLA FELD, M.D. appears in the CMS NPPES registry as a Nephrology Physician provider holding M.D. credentials at 323 N PRAIRIE AVE, INGLEWOOD, CA, 90301, with a listed phone of (310) 674-8600. NPI 1144223397 was issued on 05/23/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FELD most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 2,680 prescription claims written by this provider, covering 152 Medicare beneficiaries and totaling roughly $537K in drug spend, split 13% brand-name and 87% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Nephrology Physician is a mid-sized specialty nationwide, with 10,534 enrolled providers across 55 states and an average of 1,454 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

323 N PRAIRIE AVE
INGLEWOOD, CA 90301

Provider Details

NPI 1144223397
Specialty Nephrology Physician
Credentials M.D.
Gender Female
NPI Issued 05/23/2005

Hospital and facility affiliations

Facilities where STELLA FELD, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

PACIFIC NEPHROLOGY MEDICAL GROUP
INGLEWOOD, CA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

License & disciplinary context — California MBC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 — they are NOT specific to STELLA FELD, M.D.. To verify STELLA FELD, M.D.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

STELLA FELD, M.D. — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 2,680 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

2,680
Total Claims
$537K
Total Drug Cost
152
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
5,216
Total Day Supply
154,995
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$424K
Generic Drug Cost
$109K
Antibiotic Claims
19

Patient Demographics

Average Patient Age
73.4 years
Avg HCC Risk Score
4.79
Gender Split
49% female / 51% male
Age Distribution
<65: 33, 65-74: 46, 75-84: 40, 85+: 33

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Losartan Potassium
153
Atorvastatin Calcium
142
Amlodipine Besylate
112
Nifedipine Er
Nifedipine
98
Furosemide
87
Levothyroxine Sodium
70
Gabapentin
68
Calcium Acetate
61
Famotidine
57
Pravastatin Sodium
57

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Nephrology Physician Overview

How STELLA FELD, M.D. fits within the Nephrology Physician landscape nationally.

10,534
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider

STELLA FELD, M.D.'s 2,680 claims are above the specialty average of 1,454.

Nearby Nephrology Physician Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as FELD.

Compare Nephrology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is STELLA FELD, M.D.'s specialty?
STELLA FELD, M.D. specializes in Nephrology Physician and practices in INGLEWOOD, California. Credentials: M.D..
How much does STELLA FELD, M.D. prescribe under Medicare Part D?
In 2023, STELLA FELD, M.D. wrote 2,680 Medicare Part D claims totaling $537K in drug costs for 152 beneficiaries.
Where is STELLA FELD, M.D. located?
STELLA FELD, M.D. is located at 323 N PRAIRIE AVE, INGLEWOOD, CA, 90301. Phone: (310) 674-8600.
What is STELLA FELD, M.D.'s NPI number?
STELLA FELD, M.D.'s National Provider Identifier (NPI) is 1144223397, issued on 05/23/2005.
Does STELLA FELD, M.D. prescribe more brand-name or generic drugs?
STELLA FELD, M.D.'s prescribing is 13% brand-name and 87% generic drugs by claim count, with $424K in brand drug costs.
How many Nephrology Physician providers are there in the US?
There are 10,534 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
What drugs does STELLA FELD, M.D. prescribe most often?
Based on 2023 Medicare Part D data, STELLA FELD, M.D.'s most frequently prescribed drugs include Losartan Potassium, Atorvastatin Calcium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STELLA FELD, M.D. accept Medicare?
STELLA FELD, M.D. appears in CMS Medicare data with 2,680 Part D claims and 152 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STELLA FELD, M.D.'s credentials?
STELLA FELD, M.D.'s NPI is 1144223397 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology